US2603116A

US2603116A - Spiral actuated slidable jaw end wrench

Info

Publication number: US2603116A
Application number: US161568A
Authority: US
Inventors: Guido F Schlote; Richard C Winter
Original assignee: PERE TOOL PRODUCTS Inc DE
Current assignee: DE PERE TOOL PRODUCTS Inc; PERE TOOL PRODUCTS Inc DE
Priority date: 1950-05-12
Filing date: 1950-05-12
Publication date: 1952-07-15
Anticipated expiration: 1969-07-15

Description

y 1952 G. F. SCHLOTE ET AL SPIRAL ACTUATED SLIDABLE JAW END WRENCH Filed May 12, 1950 Attorney Patented July 15,1952

SPIRAL Aclroarsn sLIoAnLs J'AW END WRENCH Guido F. Schlote and Richard 0. Winter, Milwaulice, Wis, assignors'to De Pere Tool Products, n -i D Per Wis, a corporati n of Wisconsin Applijcat ion ma 12, 1950, Serial No. 161,568

This invention relates to an improved con 'struction of adjustable end wrench and has for its primary object to provide a wrench construction which may be much more economically manufactured and sold due to certain novel features of construction thereof whereby otherwise necessary drilling of holes, broaching of head contour and other manufacturing operations are eliminated and by means of which otherwise necessary internal bearing surfaces or end journals may be omitted without adversely afiecting the operation of the tool.

A further object of the invention is to provide an end wrench wherein the use of beveled gears is eliminated and which is so constructed that one of the gears of the wrench provides its own bearthe surface.

Various other objects and advantages of the invention will hereinafter become more fully apparent from the following description of the drawing'illustrating a presently preferred embodiment thereof, and wherein:

Figure 1 is a side elevational view of the wr n h;-

Figure 2 is an edge elevational view thereof looking from top to bottom of Figure 1; Figure 3 is a longitudinal sectional view taken substantially along a plane-as indicated by the line 3+3 of Figure 2, and

Figures 4, and 6 are enlarged cross sectional views taken substantially along planes as indi cated by the lines 4-4, ii-55 and E-- 6, respectively, of Figure 3.

Referring more specifically to the drawing, the adjustable and wrench in its entirety is designated generally 8- and includes mating sections,

designated generally 9- and IQ, having complementary portions combining to form a. wrench head H and a handle Hi.

The; mating sections 9 and Hi preferably constitute drop forgings which are copper-brazed together along their abutting faces I3 (Figures 4 5 and 6). The handle portions and the sections 9 and I!) are recessed to provide a relatively large bore Hi which extends from adjacent the head and which opens outwardly of the end of the handle, vdisposed remote to the head I l. The sections 8 and 9 are recessed to provide a bore if: in the head H which is disposed obliquely to the axis ofthe handle l2 and which is closed at one of its ends by a restricted frusto-conical end of the bore I 5 which forms a journal l-'6 and which has an opposite open end which is internally threaded as seen at H The bore M and the bore is are; connected by a here it which constitutes 4 Claims. (01. S l 165.)

an enlarged extension of the inner end of the bore M- and which is formed by reaming out complementary portions of the sections 9 and Ill; said enlarged bore portion l8 forming'a bearing or journal, as will hereinafter be described.

I The edge of the head ll, rem-otefrom the handle in Figure 3.

A brass bushing 24 is detachably secured; in the bore l2, adjacent the end thereof remote from the head ll, by a setscrew 25 whichlextends into the bore M through a threaded opening 2-6 and which bears with its inner end against a portion of the bushing 26.

A strip of metal is spirally wound to form a spiral 2.1. theconvolutions oilwhich are spaced apart to form a spiral slot 28 therebetween. A stem 29 haseone end disposed in an end of the spiral 2'7 andis suitably secured thereto as by a soft solder connection; the opposite end of the stem .29' extending from. said endof the spiral 21 through the bore of the bushing 24 and in which the stem is journaled to rotatably support said end of the spiral. S'aid'last: mentioned portion of the stem 29, ad jacent its terminal, is provided with annular rooves, 3% in which a' spring retaining clip'3 l'is dctachably engaged.1 Said clip 3| bears against the outerside of the bushing- 24. to preventthe stem 259. from sliding through the bushing inward'ly of the bore I4 and the end of the spiral 2? in which the stem, 29 is secured bearsagainst the opposite side of the bushing 24 to prevent the stem from sliding 'therethrough in the oppo'site,=direction. The. handle sections are preferably provided with aligned openings 32 located beyond the bushing 24 to afiord more ready access to the spring clip-3i A brass gear 3-3 is journaled in the enlarged bore portion l8. A peg 34 has one end secured in the gear 33, centrally thereof, and projectsperpendi'cularly from said gear into the bore l4 and is received in the opposite end'of the spiral?! which is similarly secured by a soft solder connection to said peg 34 and so that said end of the's'piral 21 will abut against an inner end of the gear 33-fr om which the peg 34 projects. The opposite outer end of the gear 33 which faces into the bore i is internally beveled or recessed, as seen at 35 so that the teeth of the gear 33 at said outer end substantially correspond to a crown gear or wheel.

A worm 36 is loosely disposed in the bore i5 and the stem or core 31 of said worm has a frustoconical end 38 which extends beyond one end of the spiral or thread 39 of the worm and which frusto-conical end is journaled in a similarly shaped closed end I6 of the bore IS. The stem or core 31, beyond the opposite end of the thread 39 is provided with a toothed enlargement forming a pinion 40 which is disposed to mesh with the ends of the teeth of the gear 33 which are contiguous with the recessed or internally beveled end 35 of said gear. stem or core 31 is of reduced diameter and provided with a tapered terminal 4| which is journaled in a similarly shaped recess 42 formed in one end of an externally threaded thrust bearing 43 which threadedly engages the threaded bore portion H. An externally threaded annular member 44 engages the threaded bore portion I1, outwardly of the bearing 43 to retain said bearing in an adjusted position in the bore portion l1 and so that the pinion-i9 will be properly disposed for meshing engagement with the gear 33.

A movable jaw 45 has a shank 46 which slidably engages in the passage 2| and which has a restricted side edge portion 41 at one end thereof which is provided with teeth for engaging the worm thread 39. The shank 46 has a recessed side edge portion 48 at its opposite end to accommodate the bearing 43 and the threaded member 44. The other side edge 49 of the shank 46 is likewise reduced in thickness to slidably fit the reduced recess portion 23 and the jaw 45 is integrally formed with said reduced shank portion 49 and extends laterally therefrom at the end of the shank remote from its toothed portion 41 so that the jaw 45 is disposed in opposed relationship to the stationary jaw 29 for movement toward and away from said jaw 29 when the shank 46 is reciprocated in the passage 2|.

The handle I2 is preferably oval-shaped in cross section, as seen in Figures 4, 5 and 6 and a similarly shaped collar 50 is slidably disposed thereon and has a pin 5| fixed thereto and which projects inwardly from a portion thereof through a longitudinally extending slot 52 formed in the part of the handle l2 formed by the section III. The inner end of the pin 5| loosely engages in the spiral slot 28 of the spiral 21 so that by sliding the collar 50 in one direction on the handle I2 the spiral 21 and the gear 33 which is secured thereto will be revolved in one direction, and by sliding the collar in the opposite direction, the spiral and gear will berevolved in the opposite direction.

-It will be readily apparent that through meshing engagement of the gear 33 and pinion 40, the worm 36 will be revolved in unison with the spiral 21 so that when said worm is turned in one direction the shank 46 will slide in the passage 2| in one direction and when the worm is revolved in the other direction, said shank 46 will be moved in the opposite direction thereby causing the movable jaw 45 which is carried by the shank 46 to be moved either toward or away from the stationary jaw 20.

It will thus be apparent that an adjustable end wrench of extremely simple construction has been provided which is capable of being very economically manufactured due to the fact that the sections 9 and 0 of the body member 8 may be pre- Beyond the pinion 40, the

formed with proper recesses therein to form the bore |4, enlarged bore l8, the bore l5 and passage 2|, when said sections are secured together in abutting engagement by copper-brazing, as previously described. Obviously, the flat surfaces of the sections 9 and I0 are smoothly ground before the sections are connected thereby greatly facilitating the operation of finishing the body member. Likewise, this construction eliminates the need for a thrust bearing to hold the gear 33 against displacement toward the head thereby greatly simplifying the operation of constructing the body member 8 and eliminating the need to use beveled gears. This is accomplished by the stem 29 and spring clip 3| which combine with the bushing 24 to prevent the spiral 21 and gear 33 from being displaced longitudinally of the handle l2 in response to the force exerted on the spiral 2! by the pin 5|.

Various modifications and changes are contemplated and may obviously be resorted to, without departing from the spirit or scope of the invention as hereinafter defined by the appended claims.

We claim as our invention:

1. An adjustable end wrench comprising a-body member having one end forming a wrench head and an opposite, elongated end forming a wrench handle, a fixed wrench jaw formed integral with said wrench head, said wrench head being recessed to provide an internal recessed portion, a movable jaw having a shank slidably engaging in the recessed portion and reciprocally movable therein for moving said movable jaw therewith toward and away from the stationary jaw, a worm journaled in the recessed head portion, said shank having a toothed portion engaging the worm for moving said shank in the recessed head portion when the worm is removed, said handle having a bore extending longitudinally therethrough having one end opening into the recessed head portion, a helically wound strip loosely 'disposed in the handle bore forming a spiral having spaced convolutions, said handle having a longitudinally extending slot, a collar slidably disposed on the handle, a pin extending inwardly from the collar loosely through said slot and engaging between adjacent convolutions of the spiral to revolve the spiral in opposite directions when the collar is reciprocated on the handle, a gear secured to one end of said spiral and journaled in an end of said bore and extending partially into the recessed portion of the head, a pinion secured to the worm and meshing with said gear, said gear and pinion being disposed at an acute angle, and means journaling and nonslidably supporting the end of the spiral located remote from said gear adjacent the end of the handle remote from the head.

2. An adjustable end wrench as in claim 1, said means comprising a bearing detachably secured in the handle bore, a spindle having one end secured in the last mentioned end ofthe spiral and having a portion extending through and journaled in said bearing, and a member detaohably connected to the opposite end of said spindle and engaging the side of the bearing opposite tothe side thereof engaged by the last mentioned end of the spiral to combine with said last mentioned spiral end to retain the spiral and gear against reciprocating movement in the handle bore in response to the thrust exerted on the spiral by the collar supported pin.

3. An adjustable end wrench as in claim 1, said handle bore having a portion of enlarged REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,309,860 Kleine July 15, 1919 1,354,782 Schlote Oct. 5, 1920 1,391,180 Evans et a1. Sept. 20, 1921 1,739,182 Schlote Dec. 10, 1929 1,915,396 Alemany June 2'7, 1933 2,322,550 St-einacher June 22, 1943 2,447,094 Schlote Aug. 17, 1948 2,293,866

Talch Aug. 25, 1949