US2774353A - Calf delivering instrument - Google Patents

Description

Dec. 18, 1956 H. L. QUIST CALF DELIVERING INSTRUMENT Filed April 14. 1955 Harvey 1.. 'ouisr IN VEN TOR.

United States Patent CALF DELIVERING INSTRUMENT Harvey L. Quist, St. Croix Falls, Wis.

Application April 14, 1955, Serial No. 501,354

3 Claims. (Cl. 128352) The present invention relates generally to veterinary obstetrical instruments and has for its primary object to provide, in a manner as hereinafter set forth, novel means for assisting a cow which is having difliculty calving.

Another important object of the present invention is to provide an instrument of the aforementioned character which may be safely used by laymen to expedite the delivery of a calf without danger of injury or discomfort to the cow.

Other objects of the invention are to provide a calf delivering instrument of the aforementioned character which will be comparatively simple in construction, strong, durable, highly efiicient and reliable in use, compact and which may be manufactured at low cost.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure l is a view in side elevation, showing an instrument constructed in accordance with the present invention in use;

Figure 2 is a perspective view of the device; and

Figure 3 is a cross-sectional view, taken substantially on the line 33 of Figure 2.

Referring now to the drawing in detail, it will be seen that the embodiment of the invention which has been illustrated comprises a tubular metallic lever 5 of suitable length and diameter. Mounted on one end portion of the tubular lever 5 is a handle or grip 6.

Affixed to the other end of the lever 5 at right angles thereto is a metallic bearing plate 7 of suitable dimensions. The bearing plate 7 is adapted to abut and fulcrum or rock on the rump, as at 8, of a cow 9. Toward this end, the bearing plate 7 is transversely bent, rounded or angulated, as at 10.

Mounted for sliding and rotary adjustment on the lever 5 is a metallic arm 11. The arm 11 is provided, on its inner end, with an eye 12 having threaded therein a setscrew 13 for securing said arm in adjusted position on the lever 5. At its outer or free end the arm 11 is provided with a hook 14.

One end portion of a suitable chain 15 is adjustably engageable with the hook 14. The other end of the chain 15 is provided with a hook 16.

It is thought that the operation or use of the device will be readily apparent from a consideration of the foregoing. Briefly, one end portion of the chain 15 is looped around the protruding legs 17 of the calf and secured by the hook 16 in an obvious manner. The plate 7 is engaged transversely with the rump 8 of the cow with the lever 5 extending rearwardly at an upward inclination in the manner shown to advantage in Figure 1 of the drawing. With the lever 5 in substantially the position shown, the chain 15 is engaged with the hook 14. With the plate 7 bearing on the cow, the lever 5 is then swung downwardly for causing the chain 15 to pull the calf outwardly. The lever 5 is then swung upwardly, the slack is removed from the chain 15 and the operation is repeated. Of course, this is done as many times as may be necessary. The transversely rounded or angulated bearing plate 7, to the upper portion of which the lever 5 is attached, rocks on the cow as said lever is swung downwardly and upwardly thereby preventing the cow from suffering injury or discomfort. The arm 11 may be slidably and rotatably adjusted on the lever 5 to meet various conditions by simply loosening the setscrew 13.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.

What is claimed as new is as follows:

1. A calf delivering instrument of the character described comprising: a lever, a handle on one end or" said lever, a bearing plate on the other end of the lever, an arm mounted for sliding and rotary adjustment on the lever, a hook on the outer end of said arm, and a chain, for connection with a calf to be delivered, adjustably engaged with said hook.

2. A calf delivering instrument of the character described comprising: a lever, a substantially transversely angulated bearing plate on one end of the lever at right angles thereto and adapted to rockably abut a cow, and a flexible member, for connetcion to a calf to be delivered, connected to the lever for actuation thereby.

3. A calf delivering instrument of the character described comprising: an elongated tubular metallic lever, a handle on one end portion of said lever, a transversely angulated plate affixed to the other end of the lever at right angles thereto and adapted to rockably abut the rump of a cow, an adjustable arm including an eye on one end rotatably and slidably mounted on the lever, a setscrew threadedly mounted in the eye and engageable with the lever for securing the arm in adjusted position, a hook on the free end of the arm, and a removable chain, for connection to a calf to be delivered, having one end portion adjustably engaged with the hook.

FOREIGN PATENTS Austria July 25, 1932

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