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Publication numberUS1467452 A
Publication typeGrant
Publication dateSep 11, 1923
Filing dateAug 7, 1922
Priority dateAug 7, 1922
Publication numberUS 1467452 A, US 1467452A, US-A-1467452, US1467452 A, US1467452A
InventorsRasmussen Robert F
Original AssigneeC A Libbey Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Bull-leading staff
US 1467452 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)




Patented Sept. 11, 1923.



Application filed August 7, 1922, Serial No. 580,213.

T 0 all whomz't may concern:

Be it known that I, ROBERT F. Ensues- SEN, a citizen of the United States, and resident of Oshkosh, in the county 'of \Vinnebago and State of Vfisconsin, have invented new and useful Improvements in Bull-Leading Staffs, of which the following is a description, reference being had to the accompanying drawings, which are a part of this speci-- fication. i

This invention relates to bull leading staffs and has for its particular object to provide means for looking or closing the throat of the hook opening of the staff.

The invention consists essentially in the novel combination, construction, and arrangement of parts more fully hereinafter described and illustrated in the accompanying specification and drawings.

In the drawings; 4 Figure 1 is a side elevation of the staff, certain portions being broken away to show the interior construction; and,

Fig, 2 is a fragmentary detailed view on L a larger scale, showing particularly the look ing slots.

Referring now more particularly to the drawings wherein like reference characters indicate like parts, it will be seen that there is provided a tubular staff which has se cured thereto, at one end, a handle 11, and is formed at the other end with a hook portion 12-, which is adapted to engage the bull.

A guiding plug 13, apertured centrally thereof as at 14, is secured in the tubular staff 10 adjacent the upper end thereof by means of a stud screw 15, or the like. This plug 18 is adapted to engage and guide a locking pin 16 which extends through the staff 10 and across the throat portion 17 of the hook 12, thereby closing the throat of the hook when the pin is in its extended position.

The locking pin 16 carries a transverse pin 18, and a coiled spring 19, surrounding the locking pin 16, engages on its one end against the plug 13 and with its other end against the transverse pin 18. This spring, therefore, normally tends to project the looking pin 16 to the position illustrated in Fig. 1.

The pin 18 extends through elongated slots 20 formed in the staff member 10, and has its ends riveted in an operating sleeve or collar 21, which sleeve is slidably mounted on the staff 10. The slots 20 are each provided-with the angularly disposed offset portions 22 and 23, the offset portions of the slots 20 being arranged in opposed di-- rections, as is clearly illustrated in Fig. 2. Th offset portions of the'slots 20 are'adapted to co-operate with the pin 18 to hold the locking pin in its adjusted positions.

Under normal conditions the coiled spring 19 will force the locking pin or rod 16 out wardly, whereupon the transverse pin 18 will repose in the offsets 22 of the locking slots. In this position of the parts it is impossible to force the rod 16 to an open position from across the throat 17 of the hook.

When, however, it is desired to open the throat of the hook, it is only necessary to grasp the collar or sleeve 21 and move the same longitudinally toward the handle 11 and then rotate this sleeve slightly to permit the cross pin 18 to enter the angular offsets 23, disposed at the upper ends of the looking slots. The tension of the coiled spring 1.9 will then cause the pin 18 to seat in the lower extremity of the offsets 23, whereupon the locking rod will be held in open position, as will be immediately apparent.

From the foregoing it will be obvious that there is provided a bull leading staff of simple construction and one wherein the throat of the hook may be conveniently closed and the locking rod held in closed position. Furthermore it will be also obvious that with equal facility this locking rod may beretracted and secured in open position.

While the specific arrangement described and illustrated has been found to be satisfactory in every respect it is not intended that this invention be unnecessarily limited but reservation is made to make such changes in the specific form illustrated as may come with the purview of the accompanying claims.

Having thus described the invention, what is claimed is:

1. In a device of the class. described, a tubular staff provided on its ends with a handle and a hook respectively, a longitudi nally displaceable' locking rod for closing the throat of said hook, spring means tending to normally extend said locking rod, 21 displaceable sleeve on said staff, a pin carried by said sleeve and engaging said looking rod, said staff being provided with slots co-operating with said pin for securing said said stafl, a hook provided with an open throat secured to the otherend of said stall, a longitudinally displaceable locking rod for closing the throat of said hook, a spring tending to normally project said locking rod, a displaceable sleeve carried by said staff, a pin carried by said sleeve, said pin engaging said'locking rod, said staff being provided with a pair of oppositely disposed slots through which saidpin projects, said slots being formed with ofisets provided with seats for said pin whereupon by displacing said sleeve said locking rod may be secured in its adjusted positions, said spring holding" said pin in saidseats' and preventing rotative displacement ogi said sleeve.

3. In a device of the class described, a

tubular staff, a handle secured to one end thereof a hook provided with an open throat secured to the other end thereof, a locking rod disposed centrally of saidstafl and adapted to project acr' oss the' throat portion of said hook an apertured plug for guiding the upper end of said locking rod, a sleeve displaceably mounted on said staff, a pin passing. through said locking rod and secure to said sleeve, a coiled spring surrounding said locking rod and bearing against said plug and said pin-respectively and tending to normally project said looking rod. across the throat of said hook, said staff being formed with a pair of oppositely disposed elongatedslots, said slots being formed with angularly disposed olfsets, said pin extending through. said slots whereby s ROBERT F. RASMUSSEN.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5732662 *Jan 22, 1996Mar 31, 1998Jacobsen; Chris J.Animal leash
EP0060100A1 *Mar 5, 1982Sep 15, 1982Brian John ThompsonAnimal restrainer
U.S. Classification119/799
International ClassificationA01K15/00
Cooperative ClassificationA01K15/003
European ClassificationA01K15/00B