US1534419A - Obstetrical forceps - Google Patents

Description

Patented Apr. v2l i 1925.

UNTTEDv STATES N 1,534,419 PATENT ottici-1.N

GEORGE sMrrii, on MULLEN, NEBRASKA.

Application iled August 7, 1923. Serial No. 656,265.

To all whom t may concern.'

Be it known that I, GEORGE SMITH, citizen of the United States, residing at Mullen, in the county of Hooker and State of Nebraska, have invented certain new and useful Improvements in Obstetrical Forceps, of which the following is a specification.

This invention relates to improved obstetrical forceps for delivering pigs, calves, or the like, and seeks, `among other objects, to provide a device of this character which may, without pain to the mother, be manipulated with facility to obtain a firm hold upon the fetus and then withdrawn for removing the fetus.

Other and incidental objects will appear hereinafter.

In the drawings:

Figure 1 is a side elevation of my iinproved forceps,

Figure 2 is a top plan view of the device.

Figure 3 is a detail sectional view on the line 3-23 of Figure 1, and

Figure 4 is a plan view of a modified form of jaw.

In carrying the invention into effect, I

, employ crossed levers and 11 to the inner ends of which are secured handles 12, suitable fe-rrules 13 being employed at the forward ends of the handles. As particularly shown in Figure 2 of the drawings, the lever 10 is offset near its inner end and is bifurcated to form an oblong loop-shaped jaw 14 having parallel sides' joined at the outer ends of the jaw by a loop bent downwardly to define a laterally directed toe 15. Immediately in the rear of the toe the sides of the jaw are bowed downwardly, as indicated at 16, and at the rear of thebowed portions 16 are bowed upwardly to form humps 17. The lever 11, like the lever 10, is also oifset near its inner end to extend between the sides of the jaw 14 at the base thereof and extending` through said sides and through `the lever 11 at the offsets therein isa screw or other suitable pivot member 1S swing ingly connecting the levers. At its forward `end portion, the lever 11 is offset laterally as indicated at 19, to form a shoulder 20 and mounted upon said lever is an oblong loop-shaped jaw 21 having parallel sides twisted together y'at their inner ends and terminating in a shank 22. The shank seats flat against the offset portion 19 of the lever abutting the shoulder 20 and extending through said portion of the lever `and through the shank are spaced `screws or other suitable fastening devices 23 detachably connecting the jaw with the lever. The sides of thejaw 21 are disposed to be received between the sides of the jaw 14, and, as particularly brought out in Figure 1, the loop at the outer ends of the sides of the jaw 21 is bent downwardly to form a toe 24 inclining forwardly in the vdirection of thev toe 15 of the jaw 14 to cooperate with the latter toe, the toe 24 being disposed to close closely behind the toe 15. The bowed portions 16 and humps 17 upon the sides of the jaw` 14 are employed to permit the jaw to pass behind the ears of a young pig,

for instance, and thus avoid injury to the skull vwhile the toe 15 is employed to support the jaw at its free end and force ay tight hold on the part of the instrument which slips behind the pigs ears. rIhe toe 24 upon the jaw 21 is employed to slip under the lower jaw of the pig and hold the pigs head firmly between the jaws of the forceps.

In Figure 4 of the drawings, I have illustrated a slightly modified form of jaw 25 for use in lieu of the jaw 21. The jaw 25 .is quite similar to the jaw 21,.being provided with spaced parallel sides connected at their outer ends by a loop bent downwardly to form a laterally directed toe 26 lying at substantially a right angle Vto the sides of the jaw whereas the toe 24 of the jaw 21 occupies an obtuse angle. to the sides of such jaw. Near their inner ends, the sides of the jaw 25 are bowed inwardly to abut each other, as indicated at 27, in the rear of which the jaws are twisted together and continued to forni a shank 28 apertured to receive the screw 23 so that the shank may be readily attached to the oifset portion 19 of the lever 11, The jaw 25 is particularly intended for use in pushing apig or calf back when either has become wedged in the pelvis. By pushing the fetus back it may bel straightened out and then brought forth as it should be.

Having thus described the invention, what is claimed as new is:

In an obstetrical forceps, the combination of crossed pivotally connected levers having a permanently located pivotal center, one of said levers being bifurcated to forni a jaw having spaced sides, the other lever extendlength of the latter jaw and the sides of the jews being connected zit-their outer ends by loops extending lziteiallyin u common diree- 10 tion with respect to the jaws.

Intestimony whereof l aiX my signature.

GEORGE SMITH. [n SJ

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