Patent Application
20220287266
The present invention relates generally to livestock handling equipment, and more particularly to a squeeze chute having a side-access needling gate next to the head gate to access an animal's neck area for syringe-based treatment (“needling”) or other inspection or treatment of the animal.
In the field of livestock handling equipment, it is known to equip a squeeze chute with needling access by which one can see and reach the neck of an animal secured in the head gate of the chute at the exit opening thereof from which the animal subsequently departs the chute once released from the head gate.
Applicant's commercialized Q-Catch 86 Series Squeeze Chute is one such example, in which each side of the chute features a cladded lower panel removably mounted in the lower half of a framed side-access opening situated between the chute exit and the respective movable side panel of the chute. This cladded lower panel is accompanied by a removable barrier bar, that when installed, spans the top half of the side access opening from the top of the cladded lower panel to the top of the side-access frame. If upper access to the animal's neck is sufficient, the bar is removed, and the cladded lower panel left in place for kick protection. If full-height access to the animal is required, for example to enable more thorough inspection, then the cladded lower panel is also removed.
Another example is shown in Published U.S. Patent Application US2018/0146639 of the Sioux Steel Company, where instead of a removable cladded panel, a skeletal gate is permanently and pivotally mounted in a framed side-access opening between the side panel and exit of the chute, and normally resides in a closed position, but is selectively openable by way of a foot-operated pedal for hands free operation.
Despite these prior designs, there remains room for improved and alternative solutions for providing needling access in a livestock squeeze chute.
According to a first of the invention there is provided, in a livestock squeeze chute comprising a primary structural frame, a pair of movable side-walls situated on laterally opposing sides of an interior space of the squeeze chute through which animals traverse on a longitudinal pathway from an entrance opening at a first end of said squeeze chute to an exit opening at a longitudinally opposing end of said squeeze chute, and a head gate operably installed at said exit opening to enable securement of an animal at said exit opening, a side-gate assembly residing adjacent said exit opening in a space between a border frame of said exit opening and a respective one of the movable side walls, said side-gate assembly comprising:
a side-gate frame delimiting a side-access opening that communicates into the interior space of the squeeze chute from a surrounding environment external thereto for lateral access to an animal secured in the exit opening by the head gate;
an openable/closeable lower side-gate movably coupled to said side-gate frame in movable relation thereto between a closed position obstructing a lower area of said side-access opening, and an open position revealing said lower area of the side-access opening to enable access to the animal through said revealed lower area of the side-access opening; and
an upper barrier movably coupled to the lower side-gate in movable relation to the closed position thereof between a closed state at least partially obstructing an upper area of said side-access opening above the lower side-gate, and an open state withdrawn from said upper area of said side-access opening to enable greater access to the animal through said revealed upper area of the side-access opening.
According to a second aspect of the invention there is provided, in the same type of livestock squeeze chute recited in the preamble of the first aspect of the invention,
a side-gate frame delimiting a side-access opening that communicates into the longitudinal pathway of the squeeze chute from a surrounding environment external thereto for lateral access to an animal secured in the exit opening by the head gate; and
an openable/closeable side-gate movably coupled to said side-gate frame in movable relation thereto between a closed position obstructing at least a substantial portion of said side-access opening, and an open position revealing said substantial portion of said side-access opening to enable access to the animal through said revealed lower area of the side-access opening;
wherein said side-gate is pivotably coupled, and also removably coupled, to said side-gate frame by a hinged connection that comprises a set of male stub shafts and a cooperating set of female receptacles, which are distributed among said side-gate and said gate frame in co-operable relative positions to one another such that said side-gate is pivotally movable between the open and closed positions while at a first elevation relative to the gate frame, and is removable from the gate frame by lifting of the side-gate to a greater second elevation at which the male stub shafts are disengaged from said female receptacles.
According to a third aspect of the invention, there is provided, in the same type of livestock squeeze chute recited in the preamble of the first or second aspect of the invention, a side-gate frame delimiting a side-access opening that communicates into the interior space of the squeeze chute from a surrounding environment external thereto for lateral access to an animal secured in the exit opening by the head gate;
a lower side-gate configured for selective removable placement thereof in a closed position obstructing a lower area of said side-access opening;
an upper barrier configured for selective removable placement thereof in a working position standing upright from the closed position of the lower side-gate to at least partially obstruct an upper area of said side-access opening above said lower side-gate;
wherein the lower side-gate and the upper barrier are further configured for co-operable interaction in a self-supporting condition removed from said gate frame, with the upper barrier angling downward from said side-gate and thereby forming a supportive prop between said side-gate and an underlying support surface.
One embodiment of the invention will now be described in conjunction with the accompanying drawings in which:
In the drawings like characters of reference indicate corresponding parts in the different figures.
With initial references to
The border-framed opening at a first of these two ends of the chute is referred to herein as an entrance opening 22 through animals are admitted into the interior space in controlled one-by-one fashion via a sliding gate 24 installed on the primary structural frame adjacent to this entrance opening 22. The border-framed opening at the opposing second end chute is referred to herein as an exit opening 26 through which animals depart the interior space of the chute once having travelled therethrough on the longitudinal path from the opposing entrance opening. The first and second ends of the chute are thus also referred to as the rear and front ends 28, 30 of the chute, respectively, in relation to the travel direction of animal's moving therethrough, moving forwardly from the rear end of the chute toward the opposing front end thereof. Departure of the individually admitted animal from the chute through the exit opening at the front end thereof is controlled via a head gate 32, closing of which is performed while the animal is initially passing through the exit opening 26 so that opposing sides of the head gate abut against opposing sides of the animal's body to help hold the animal in a position in which their head resides outside the chute, while the trailing remainder of their body is still inside the chute.
To further hold the animal stationary in this position, the chute 10 features a pair of movable side walls 34, each normally residing in a non-working position situated generally within a vertical plane bound by the longitudinal floor beam 12, longitudinal header beam 14, and two corner posts 16 at a respective side of the chute. Via a control linkage 35, for example operable by a squeeze control lever 36 installed externally on one side of the chute near the head gate 32 and exit opening 26, the two side walls 34 are selectively movable in an inward direction toward one another and into the interior space of the squeeze chute in order to constrict the width of the interior space and thereby squeeze against opposing sides of the trailing rear portion of the animal's body inside the chute. This cooperates with the head gate 32 to further constrain the animal in a stationary position for safe inspection and/or treatment thereof by a human operator from laterally outside the chute. While the illustrated example is a manually operated squeeze chute with a squeeze control lever 36, and a likewise manually-operated head gate control lever 38 hanging externally on the same side of the chute, it will be appreciated from the following description that the present invention may be employed on a variety of different squeeze chutes, whether those relying on manual actuation force like the illustrated embodiment, or using powered actuation means, for example hydraulic actuators and appropriate hydraulic circuitry and controls, examples of which are already known in the art.
At a front end of each side wall 34, there is coupled thereto a side-gate frame 40 via a pivotal connection enabling relative pivoting between the side wall 34 and the side-gate frame 40 about a vertically upright pivot axis. The side-gate frame 40 features a rear frame member 42 standing vertically upright, a front frame member 44 standing parallel thereto in horizontally spaced relation therefrom, a bottom cross-member 46 spanning horizontally between the front and rear frame members at bottom ends thereof, and a top cross-member 48 spanning horizontally between the front and rear frame members at top ends thereof in parallel relation to the bottom cross-member 46. These four frame members of the side-gate frame 40 thus delimit a rectangular side-access opening 50 of relatively tall narrow proportions, having a height of notably greater vertical measure between the top and bottom cross-members 48, 46 than a width of the side-access opening 50 measured horizontally between the front and rear frame members 44, 42.
The front frame member 44 is supported on the structural frame of the chute in a hinged fashion, having its top and bottom ends rotatably supported on the structural frame for pivotal movement about another vertical pivot axis, for example via vertically oriented stub axles respectively fitted in top and bottom support blocks 52, 54 mounted to the outside of the longitudinal header and floor beams 14, 12, respectively. These stub axles are mated with respective bushings fitted at top and bottom ends of the front frame member 44 of the gate frame. The gate frame 40 is also coupled to the side wall 34 in hinged fashion, for example via top and bottom support plates 56, 58 that are respectively affixed atop and beneath the top and bottom cross-members 48, 46 of the gate frame, and are pivotally coupled to a front end of the side wall 34. In the illustrated example, the pivotal connection is established by top and bottom vertically oriented stub axles 59a, 59b (
The side wall 34 and the gate frame 40 are thus linked for co-operable movement relative to the primary structural frame of the chute, so that when the squeeze operating lever 36 is raised up into a generally horizontal working position spanning laterally outward from the front frame member 44 of one of the gate frames 40 from a normally stowed position hanging downwardly and externally therebeside, pushing of the squeeze operating lever 36 in a rearward direction causes the gate frame 40 to pivot inwardly of the chute, and the connected side wall 34 to shift laterally inward into the working position. The linkage 35 connected between the gate frame and side wall combination on one side of the chute to the matching gate frame and side wall combination at the opposing side of the chute causes synchronous movement of both combinations from the non-working position to the working position.
Thus far, the forgoing description resembles a known squeeze chute construction closely reflecting that of Applicant's aforementioned Q-catch 86 Series squeeze chute, and is used in a non-limiting manner simply to set the general context of the present invention. The present invention relates more particularly to a novel, inventive design of the overall side-gate assembly co-operably formed by the above described gate frame, and cooperating components to which further attention is now turned. It will be appreciated that this novel gate assembly can be employed in other varieties of squeeze chute similarly having a front head gate and a pair of movable side walls, regardless of the particular construction and operating details thereof.
In the illustrated embodiment, the lower side-gate is a cladded gate comprising a rectangular perimeter frame composed of vertically upright front and rear side members 76, 78 lying parallel to the front and rear members 44, 42 of the gate frame 70 in close respective adjacency thereto when the side-gate 72 is in its closed position. The perimeter frame of the side-gate 72 further includes a pair of upper and lower cross-bars 80, 82 perpendicularly joining the front and rear side members 76, 78 at the top and bottom ends thereof, respectively, and a solid cladding panel 84 affixed to the perimeter frame to span the entire area bound thereby. The cladded gate thus forms a solid lower barrier obstructing any potential kicking or mis-step of an animal's leg through the lower half of the side-access opening 50.
The upper barrier member of the illustrated embodiment is an elongated bar, for example a length of hollow metal tubing, having a notable lesser width than that of the lower side-gate 72. The barrier member 74 has a proximal end pivotally pinned to the lower side-gate 72 via a horizontal pivot pin 86 that penetrates through the barrier member 74 and through a pair of outwardly projecting lugs 88 that are attached to the upper cross-bar 80 near the top end of the gate on opposite sides of the barrier member 74. The barrier member 74 is thus pivotable in a vertical plane into and out of a closed state in which the barrier member 74 stands upright from the top end of the closed lower side-gate 72 and spans upwardly therefrom to the top cross-member 48 of the gate frame 40, thus partially obstructing the upper area of the side-access opening 50, as shown in
The barrier member 74 is normally held in the closed state via a slam latch mechanism 90 installed on the top cross-member 48 of the gate frame 40. The latch mechanism 90 comprises a downwardly-biased catch 92 mounted in vertically slidable fashion on the top cross-member 48 in normally obstructing relation to a receiving cavity that opens into the cross-member 48 at the underside and outer face thereof to accommodate a distal end of the barrier member 74 when closed. The downwardly-biased catch 92 has an obliquely oriented outer working face 92a that angles upwardly and outwardly from the top cross-member 48 so that swinging of the barrier member 74 toward the top cross-member 48 during a closing stroke of the barrier member automatically displaces the catch 92 upwardly out of its normal locking position. This upward shifting of the catch 92 accommodates movement of the distal end of the barrier member 74 into the receiving cavity of the top cross-member 48, upon which the catch 92 is then biased back downwardly into its locking position blocking subsequent withdrawal of the barrier member's top end from the cavity. The downward bias may be defined entirely by gravitational action, or by aid of spring loading mechanism. The barrier member 74 is thus automatically locked in the closed state, until the catch 92 is later manually lifted by a user. This is of course only one non-limiting example of a suitable latching mechanism usable to normally hold the barrier member in the closed state.
The position of the barrier member 74 is generally centered across the width of the lower side-gate 72, and thus is likewise centered across the side-access opening 50, whereby even the partial obstruction of the upper area of the side-access opening 50 by the relatively narrow and centrally positioned barrier member 74 is sufficient to prevent an animal's head from being passed through this upper area during the animal's traversal of the longitudinal pathway through the chute. Accordingly, the animal's natural tendency to seek exit from the chute will lead them instead to the open head gate 32 at the exit opening 26 of the chute. At the same time, the partial degree of obstruction to the upper area of the side-access opening 50 gives a human operator a substantial degree of visual and physical access to the animal via the open space left on both sides of the closed barrier member 74, which in most instances will be ample roof for conventional inspection and treatment of the animal's neck.
However, in other embodiments, the barrier member may be of alternative form and wider breadth, thus covering a greater portion, or even substantial entirety, of the upper area of the side-access opening 50. When withdrawn from the closed state standing upward from the lower side-gate 72 to fully open up the upper area of the side-access opening 50 for greater visual and physical access to an animal secured in the head gate 32, the barrier member 74 is manually swung downwardly out engagement from the top cross-member 48 of the gate frame 40. Swung open in this manner, the opened barrier member 74 is stowed in a position hanging downwardly along the exterior side of the lower side-gate 72 outside the chute, as shown in
The lower side-gate 72 is hinged to the gate frame 40, for example at the rear frame member 42 thereof, to enable swinging horizontal movement between a closed position occupying, and thus obstructing, a substantial entirety of the lower area of the side-access opening 50, and an open position revealing the lower area of the side-access opening. This open position, together with the open state of the barrier member, enables full visual and physical access through the entire access opening to the animal secured in the head gate 32. The hinged connection between the lower side-gate 72 and the gate frame 40 in the illustrated embodiment is of a configuration that enables not only this pivotal movement between the open and closed positions, but also enables complete removal of the lower side-gate 72, and the attached upper barrier member 74, from the gate frame. This way, a worker-accommodating area outside the chute and adjacent to the gate frame 40 is not occupied at all by the open position of the side-gate 72, thus further improving the overall available working space at the side-access opening. The side-gate's hinged connection includes a pair of male stub shafts 94 standing upright in parallel and adjacent, but spaced, relation to the rear frame member 42 of the gate frame 40. Each stub shaft 94 stands upright from a larger-diameter stop 96 that is affixed to the rear frame member 42 at the outer side thereof opposite the chute interior. The hinged connection also includes a pair of protruding lugs 98 affixed to the exterior side of the rear side member 78 of the lower side-gate 72 thereof. Each such hinge lug 98 has an aperture penetrating vertically therethrough to form a female receptacle that rotatably receives a respective one of the male stub shafts 94.
The protruding lugs 98 reside respectively above the stops 96 of the two stub shafts 94. The lugs 98 normally rest on these stops 96, and thereby support the lower side-gate 72 at a normal default elevation residing closely adjacent to the bottom cross-member 46 of the gate frame 40. A gate stopper 100 is affixed to the bottom cross-member 46 in a position protruding upwardly therefrom so as to reach overlapping elevation with the lower cross-bar 82 of the side-gate's perimeter frame. This way, the gate stopper 100 blocks swinging of the lower side-gate 72 in either direction from its closed position whenever the gate is seated at its normal default elevation on the stops 96 of the stub shafts 94. Accordingly, the gate stopper 100 serves to normally lock the lower side-gate in its closed position in absence of a lifting action raising the lower-side gate out this normal default elevation.
Referring to
To prevent inadvertent removal of the lower side-gate 72 when attempting to merely open same, a respective lock pin 102 may be normally engaged in a cross-bore 104 of at least one of the stub shafts 94, as shown in
Referring to
It will be appreciated that while the illustrated embodiment places the stub shafts 94 in upright orientation atop stops 96 that are mounted to the gate frame, and places the cooperating lugs 98 on the side-gate 72, a reverse configuration may alternatively be employed in which the stops 96 are attached to the side-gate and have the stub shafts depending downward from the stops, with the lugs 98 instead being attached to the gate frame and the optional lock pin(s) 102 being engaged through the stub shaft(s) near the bottom end(s) thereof. Either way, the lugs and stops normally abut one another to hold the side-gate at its normal default elevation in which swinging movement is blocked by the gate stopper 100, while lifting of the side-gate to a first greater elevation enables opening of the side-gate, and further lifting of the side-gate to an even greater second elevation, with the lock pin removed, enables full removal of the side-gate. In either case, the stub shaft length is selected to exceed the height by which the gate stopper 100 overlaps with the normal default elevation of the side-gate so that lifting the side-gate to the first elevated state clearing the gate stopper 100 does not fully disengage the stub shafts from the female receptacles.
The disclosed side-gate assembly 70 provides more flexible options than the prior art in terms of partial or full height side access to an animal secured in the head gate 32 of the chute 10. A worker requiring only upper body access can simply unlatch and lower the pivotally mounted upper barrier member 74, without fear of loss or misplacement thereof since the upper barrier member 74 remains attached to the lower side-gate, even when moved to its open state withdrawn from the upper area of the side-access opening 50. Should access to the animal's lower body also be required, the user can partially lift the lower side-gate to its first elevated state, and swing the lower side-gate into its open position. Should this open position still be somewhat obstructive to the neighbouring working space outside the chute, the lower side-gate, and attached upper barrier member, can be removed entirely by lifting to the second elevated state, preferably subject to prior removal of a locking pin 102 that normally prevents inadvertent removal during the gate-opening process.
In addition to preventing loss or misplacement of the upper barrier members, the amalgamation of the lower side-gate and the upper barrier 74 into a pivotally coupled combination unit has another benefit, illustrated with particular reference to
It will be appreciated that the novel inclusion of a movable upper barrier member, whether pivotably or otherwise movably supported on the openable/closeable lower side-gate, may be employed regardless of whether the openable/closeable lower side-gate is also removable, just as the novel use of a side-gate whose hinge assembly enables both swinging and full removal may be employed regardless of whether the side-gate is accompanied by an openable/closeable upper barrier member. If the barrier member is omitted, the side-gate may be of greater height than in the illustrated embodiment, for example being a full-height gate substantially occupying an entire height of the side-access opening 50. In embodiments where both the lower side-gate and upper barrier member are included, the relative height proportions of same may vary from that of the present invention where the top and bottom areas of the access opening respectively obstructed by these components are each approximately half of the overall area of the access opening. It will also be appreciated that though the illustrated embodiment uses a cladded side-gate for full-width occlusion of the side-access opening, a skeletal gate structure may alternatively be employed in other embodiments.
Since various modifications can be made in my invention as herein above described, and many apparently widely different embodiments of same made, it is intended that all matter contained in the accompanying specification shall be interpreted as illustrative only and not in a limiting sense.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CA2019/051708 | 11/29/2019 | WO |
| Number | Date | Country | |
|---|---|---|---|
| 62929188 | Nov 2019 | US |
