US460474A

US460474A - Wrench

Info

Publication number: US460474A
Authority: US
Publication date: 1891-09-29
Anticipated expiration: 1908-09-29

Description

(No Model.)

0. KNAPP & C. E. 'SALISCH.

WRENCH.

Patented Sept. 29, 18 91.

r w zgmfibwim n. i=5; 2% E m w \\\\w =lm M 2% m WWW OTTO KNAPP AND CHARLES E. SALISOH, OF KANSAS CITY, MISSOURI.

WRENCH.

SPECIFICATION forming part of Letters Patent No, 460,474,;lated September 29, 1891.

Application filed August 4,1890- Serial No. 360.954 (No model.)

To all whom it may concern:

Be it known that we, OTTO KNAPP and CHARLES E. SALISCH, both of Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Ratchet-Trenches, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

Our invention relates to certain improvements in ratchet-wrenches; and it consists in features of novelty hereinafter described, and pointed out in the claims.

Figure I is a longitudinal section showing a plan view of the ratchet device. Fig. II is a longitudinal section taken in the general direction of line II II, Fig. I. Fig. III is an enlarged vertical section of the head and adjustable bushing. Fig. IV is a perspective view of the head. Fig. V is a perspective view of the bushing.

Referring to the drawings, 1 2 represent the shank, which is formed of two parts, as shown in Fig. II. The two parts of the shank are held together near their outer ends by means of screws 3, which engage in holes am the shank. On the part 1 of the shank is a bolt 5, which extends through a hollow handle 6, said handle being held in place on the bolt by means of a screw-tap 7.

8 represents a recess in the handle, into which fits an extension 9 on the part 2 of the shank, the two parts of the shank being thus held firmly together near their inner ends. The outer end of the shank is formed into a hollow cylindrical portion 10, into which fits a cylindrical head 11.

12 represents a boss surrounding the head 11, said boss working in a circumferential groove 13 in the outer end of the shank and at the same time being free to turnin its bearing. In the boss 12 are a series of ratchet openings or teeth 14, the boss thus serving the double purpose of forming a ratchet and re-enforcing the head. The head 11 is provided with different-sized openings at its respective ends, as shown at 15 16, the purpose of the same being to admit of different-sized taps or nuts.

In order to make the wrench fit still other sizes of nuts we provide an adjustable bushdepth of the opening in the head and is adjustably held within the head by means of a spring 19, having a bulged portion 20, said spring being secured to the head 11 at 21.

22 represents indentations in the bushing, in which the bulged portion 20 of the spring 19 rests, and thus holds the bushing at the desired point, the lower one of the said indentations being formed in a rib or block 22, so as to bring said indentation in the same vertical plane with the upper indentation, and the side of the head is provided with a socket or cavity 22 for the admission of the said block when the bushing occupies the lower position. The bushing may be placed with either of its ends desired flush with the ends of the head, (see dotted lines, Fig. III,) in which position it is held by the spring until it is desired to change the same. We are thus enabled very readily to adjust our Wrench to four different sizes of nuts.

Within the part 1 of the shank is a recess 23. Near the outer end of this recess is a double pawl 24, having teeth 25, which engage with the ratchet on the head 11 when thrown into contact therewith. The pawl is formed in somewhat the shape of a crescent, its outer circular portion having, bearing in a circular socket in the shank, as shown at 26, thus avoiding a central pivot-pin, which would soon be Worn out.

27 represents a stem on the pawl, in which there is a recess 28.

29 represents a trip-bar, the outer end of which engages in the recess 28 in the stem 27.

30 represents a disk on the trip-bar, which forms a pivotal bearing for the same, the circumferential face of the disk having a bearing in a circular socket in the shank, as shown at 31.

32 represents a T-head on the inner end of the bar 29, said head extending through openings 33 in the shank a sufficient distance, so that by pressing upon the same with the hand the trip-bar 29 may be thrown to either side of the recess 23 and thus throw the pawl 24 so as to bring whichever one of the teeth 25 desired into contact with the ratchet, according to the direction it is desired to turn the nut, .(sec dotted and full lines, Fig. 1,) it of course being understood that the head 11 is permitted to rotate in either direction in its bearing in the shank.

34 represents a spring, which bears against a projection 35 on the head 32, and thus holds the trip-bar and pawl in the position they are placed by the operator.

We claim as our invention 1. In a wrench, the combination, with the head having nut-openings, of an adjustable bushing provided with the indentations 22, arranged to reciprocate in said openings, and having nut-openings of different sizes and the block one of said indentations 22 being formed in said block, and a spring adapted JAS. E. KNIGHT, M. G. DEWEY.