US715482A - Pivot-joint for tobacco-stalk cutters, pruning-shears, or the like. - Google Patents

Description

No. 7|5,482. Pammed nen. 9, |902. l .1. s. KAUFFMAN. y PIVOTJGINT FOR TOBACCU STALK C-UTTERS, PRUNING SHEARS, 0R THE LIKE.

(Application filed Apr. 19, 1902.)

No Mode.) Y

M'fnesses: .zewwf Il? f/ w TH: Nonnls screws cn. mmc-uws., msnen-Ton. oV c.

UNITED STATES PATENT CEEICE.

JAOGB S. KAUFFMAN, OF LANCASTER, PENNSYLVANIA.

FlVOT-JONT FOR TGBACCO-STALK CUTTERS, PRUNlNG-SHEARS, ORTHE LIKE.

SPECIFICATION forming part of Letters Patent No. 715,482, dated December 9, 1902. Application filed April 19, 1902. `Serial No. 103,716. (No model.)

To all whom it 11m/y concern:

Be it known that I, J AcoB S. KAUEEMAN, a citizen of the United States, residing at Lancaster, in the county of Lancaster and State of Pennsylvania, have invented certain new and useful Improvements in Pivot-Joints for Tobacco-Stalk Cutters, Pruning-Shears, or the Like; and I do hereby declare'the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in a pivot-joint for tobacco-stalk cutters, prnning-shears, and the like of that class in which an angular block with rounded ends fitting in sockets forms the chief feature of said joint, while a bolt serves to bind or hold the parts together.

The object of the invention is the production of a simple and eective pivot-joint work ing with a minimum of friction and without strain or wear on the pivot bolt or pin,l being adjustable to a limited extent for taking up lost motion, practically dust-proof, and capable of carrying a quantity of lubricating matter.

The elements of the invention will severally and at large appear in the following description,and they will be separately or combinediy pointed out or setforth in the appended claims.

The purposes of the invention are attained by the mechanism, devices, and means illustrated in the accompanying drawings, similar reference characters designating like parts throughout the several views, in which- Figure l is a top view of a tobaccostalk cutter having a pivot-joint embodying the elements of the invention, being partially in open position; Fig. 2, a side elevation of Fig. 1; Fig. 3, an elevation of Fig. 1 viewed from the left with the cutting-blade removed and the curved arm appearing in section, taken on the line o; fr; Fig. 4, a top view of a cutter having two cutting blades with the top washer-plate and the securing-nut removed; Figs. 5, 6, 7, and 8 are enlarged views showing in detail the top Washer-plate and the pivotblock; and Fig. 9 is'an enlarged sectional elevation taken on the line 'y y in Figs. l and 4., showing the elements of the invention in operative positions.

In the drawings the joint of the invention is shown in the construction of two cutters, the one having a single cn tting-blade working shearingly in connection with a curving arm, both blade and arm being well known to the trade and no part of the invention, and the other having two blades working shearingly together, being also well known to the trade and no part of the invention, and with the exception of these blades and the arms supporting them and making their operation possible the cutters are alike in every respect,

so thatthe same reference characters may be used in the description Without confusing the parts. Each of these cutters has two pivotedtogether members A A', and in order that said members maybe supported in steady and iirm but smooth and easy working positions Vthe following specific construction. is provided: The member A consists of two practically circular disk-plates a d', arranged in parallel planes, having a prescribed cylindrical space or recess 0.2 therebetween, said plates projecting from the lower end of a socketed handlestem a3, as shown. The plate a through its body is provided with a prescribed angular aperture a4, and the plate a interiorly with a prescribed socket a5, having a central oritice a6 through its body with a countersunk recess in the bottom thereof, as shown. The member A consists of a practically circular disk-plate al, neatly fitted-into said space or recess a2 and projected from the lower end of a socketed handle-stem a8, also as shown, said plate al being provided with an angular aperture n.9 of a size similar to and in certain positions registering with said aperture a4. Into the sockets of the stems o3 as are fitted or driven the prescribed ends of handle-bars A2, whereby the cutters are Worked or operated, and the stems ou their adjacent surfaces are provided with lugs d10, preventing the outer ends of the handle-bars from striking together or contacting to the injuring of the hands While operating or working the cutters.

To complete the pivot-joint, there is a block B, of requisite size and shape, having an angular body b, with top and bottom projections t h2 and a central orice h3 therethrough. (See Figs. 7 and 8.) This block B is passed through the aperture u,4 of the plate IOS a and seated in the aperture o? of the plate Y a7, with its body b neatly fitting said latter aperture, its bottom projection b2 seated and neatly fitting in said socket a5, its top projection b extending wholly into said aperture a4, and its orice b3 lying over the orifice a, but having a slightly-greater diameter. A Washer C, consisting of a prescribed circular disk or top plate c, having a prescribed angular bottom projection c', with a prescribed socket c2 in the under surface thereof and a central orifice c3 therethrough, is placed on top of the plate a, with its projection c seated and neatly fitting in the aperture a4 of' the plate CL, its socket c2 engaging and neatly fitting on the top projection b of the block B, and its orifice c5 of equal diameter with the orifice d6, with which and the orifice b3 of the block B said orifice c3 completes a vertical aperture extending through the parts. A bolt D, having a beveled head CZ, a smooth portion d', and a threaded end d2, is inserted upwardly through said latter aperture, with its head seated in the countersunk recess of the plate a and its shaft or stem neatly fitting in the orifices a and c3, respectively, of said plate a and of the washer C, with its smooth portion d having the requisite clearance in its passage through the orifice b3 of the block B, preventing all contact therewith, while a nut D' on its threaded end d2 and screwed home onto said washer completes the pivot-joint, securely holding the parts together and without working or wearing on said bolt.

Providing the plate d of the member A with a forwardly-projecting curved arm 1 of approved dimensions and shape in cross-section and in the plane of said plate and providing the plate a7 of the member A' with a forwardly-projecting arm 2 in the plane of said. latter plate, said arm having a recess 3 in its under surface, into which recess is placed a blade 4, with a cutting edge 5 and secured in place, as by bolts and nuts all as shown, said blade working shearingly over the top surface of said arm, a cutter (illustrated in Figs. 1, 2, and 3) is produced. .Again, providing the plates ct and a7 of said members and situated in their respective planes, with oppositely-disposed arms 7 and 8, having blades 9 and l0 secured to their adjacent surfaces, as by bolts and nuts ll, said blades being provided with cutting edges 12 and 13, working shearingly together, all also as shown, a cutter (illustrated in Fig. 4) is produced.

The invention having been thus ascertained and described and the manner in which it is performed fully set forth and shown, what is considered new, and desired to be secured by Letters Patent, is-

l. A pivot-joint comprising two members, one member having a socketed handle-stem with two parallel plates projecting from the lower or closed end thereof, with a prescribed recess between the plates,the upper plate having a prescribed aperture through its body,

and the lower plate in its surface within said recess having a prescribed socket with a central orice having a countersunk recess in the bottom thereof, and the other member having a socketed handle-stem with a plate projecting from the lower or closed end thereof and neatly inserted in the recess between said parallel plates, and said inserted plate having through its body an aperture registering with the aperture in said upper plate; apivotblock neatly seated in said latter aperture, said block having a bottom projection neatly seated in the socket of said under plate, and a top projection extending into the aperture of said upper plate, with a prescribed orifice axially through its body; a circular disk placed on top of said upper plate, said disk having an angular projection neatly engaging in the angular aperture of said plate, and having in its under surface a socket neatly engaging on the top projection of said pivotblock, and having a central orifice through its body; and a taper-headed bolt passing through the axial orifices of the parts, with its head seated in the countersunk recess of the under plate, and a nut engaging on its threaded end, said nut screwed home onto said disk; all substantially as described and for the purpose hereinbefore set forth.

2. A pivot-joint for tobacco-stalk cutting shears and the like consisting of two members, each member having a socketed handlestem, the one of said members having a pair of parallel plates with a recess therebetween, the upper plate having an angular aperture and the under plate, in its inner surface, having a circularly-concaved socket with a central orifice through its body and a recess countersunk thereinto on the under side thereof, and the other one of said members having a plate neatly fitted into said recess and having an aperture through its body to register with said former aperture; an angular pivotblock neatly fitted into said latter aperture, said block having a bottom projection neatly seated in the socket of said under plate, also a top projection extending into the aperture of said top plate, and an axial orifice through its body; a washer-plate having an angular bottom projection with a socket in its under surface and a prescribed orifice through its body, said washer-plate placed on top of said upper plate, said projection neatly fitting in the aperture of the plate, said socket neatly engaging on the top projection of the block, and said orifice completing a prescribed orifice through the parts; and a bolt passing upwardly through said latter orifice, its head engagingin the countersunk recess of said under plate, its body closely fitting in the orifices of the under and Washer plates,with a prescribed space therearound in its passage through the pivot-block, and a nut on its threaded end and screwed home onto said washer-plate;

all substantially as described and for the purpose hereinbefore set forth.

3. The combination in a pivot-joint of the ICO IIO

characterdesoribedmith the member, A,hav ing the parallel plates, ct a', with lthe reoess, o?, therebetween, and the handle-stem, as, said plate, a, having.r the angular aperture, d4, and said plate, ct', having,r the socket, a5, with the orifice, a, outwardly widened at the lower end thereof, and the member, A, having;r the plate, a7, seated in said recess, a2, said latter plate having the handle-stem, a8, and the anguiar aperture, a9; of the pivot-block, B, having the angular body, b, the top projection, b', the bottom projection, b2, and the axial orifice, b3, with its body, l), seated in said aperture, a9, its projection, b2, engaging in said socket, o5, its projection, b', extended, and its orifice, b3,

the Washer, C, coning into said aperture, overlying' said orifice, a6;

sisting of the disk-plate, c, having the angular bottom projection, c',with the under-surface socket, 02, and the central orifice, o3,

and screwed home onto said Washer, C, sub-` stantially as described and for the purpose hereinbefore set forth.

In testimony whereof I ax my signature in presence of two Witnesses.

JACOB S. KAUFFMAN. Witnesses:

PAUL A. HERR, DANIEL H. HERR.

Images