US1068686A - Wrench. - Google Patents

Description

'W. MOGILL.

WRENCH.

APPLICATION FILED PEBJ, 1913.

1,068,686. Patented July 29, 1913.

2 BHEETBSHBET 1.

Lid,

' &3,

WI NESSES: INVENTOR' W Jawfi Way/H.-

NW A W A$TORNEY COLUMBIA PLANOGRAPH IO-,WASHINGTON. D, c.

W. MoG-ILL.

WRENCH.

APPLICATION FILED I'EB.1, 1913.

Patented July 29, 1913.

2 SHEETS-SHEET 2 INVENTQR Madam M0711! W ATTORNEY WISDOM MoGIIiL, OF WHCO,

WRENCH.

To all whom it may concern:

Be it known that I, lVIsDoM MOGi-LL, a citizen of the Uni-ted States, residing at Waco, in the county of McLennan and State of Texas, have invented certain new and useful Improvements in Trenches, of which the following is a specification.

My invention relates to a new and useful wrench of the sliding jaw type, and the obj ect of the invention is to provide a sliding jaw wrench in which leverage may be applied to produce rotation of the head nut, thus making it possible to clamp any objectv-ery securely between the jaws of the wrench.

A further object of the invention is to provide a sliding jaw wrench in which rotation will be impressed upon a feed-nut, correlated with the sliding jaw through applying an oscillatory motion to a certain lever, the construction being such that the oscillatory movement may, through a slight adjustment, be made to rotate the feed-nut in either direction.

A still further object of the invention is to provide a device of the character described that will be strong, etficient, and simple and comparatively inexpensive to construct, also one in which the several parts will not be likely to get out of working order.

With the above and other objects in view the invention has relation to certain novel features of construction and operation, an example of which is described in the following specification and illustrated in the accompanying drawings, wherein:

Figure 1 is a view of the wrench in front elevation, the handle portion of the wrench being broken away. Fig. 2 is a rear elevation view of the wrench. Fig. 3 is a detail view of the feed-nut showing the same upon an enlarged scale. Fig. 4 is a sectional view taken upon the line a2m of Fig. 2, showing a portion of the screw-threaded shank of the wrench, with the sliding jaw and feed-nut mounted upon said portion. Fig. 5 is a transverse sectional view taken upon the line y-y of Fig. 1. Fig. 6 is a transverse sectional view taken upon the line e-z of Fig. 1. Fig. 7 is a detail view of an apertured plate carrying a clutch face, said plate being one of the wrench elements.

Referring now more particularly to the drawings, wherein like reference characters designate similar parts in all the figures, the numeral 1 denotes a threaded shank, pro- Specifieationef Letters Patent.

Applicationfiled February 1., 1913.

Patented July 29, 1913. Serial No. 745,628.

l vided at one extremity with a handle 2 and carrying at its other end a stationary aw 3. Upon the shank 1 is also mounted a jaw 4, which is adapted to undergo a sliding displacement upon said shank, but is incapable of rotation thereupon. Rotation of the jaw 4 is prevented by providing the shank 1 with flattened portions 5 at opposite sides along its entire length, the aperture in said jaw, receiving said shank being correspondingly shaped.v In order to more readily refer to difierent portions of the sliding jaw 4, that extremity of said jaw, which is nearest adj acent to the jaw 8 will hereinafter be called the front extremity, distinguishing it from the other extremity of the jaw, hereinafter termed the rear extremity. The shank-receiving central aperture of the aw 4 is enlarged in its middle portion as indicated by the numeral 5, the lateral faces of the j aw being somewhat raised opposite said aperture as indicated at 5*, the portions 5 forming walls for the aperture 5 Within the rear portion of the aperture 5, a sleeve '6 is slidably mounted, and in the front portion of said aperture, a spring 7 is coiled and is made to bear against the front end of the sleeve 6, impressing upon said sleeve a tendency to rearward motion. The rear portion of the sleeve 6 projects into a slotted aperture 8 provided in the jaw 4, and carries within said aperture a clutch member 9, having front and rear clutch faces, respectively designated 9 and 9". The rear wall of the slot 8 is formed by a plate 10 of substantially rectangular form, secured to the rear face of the jaw 4 by screws 11. The plate 10 is provided with a central aperture 10*, of some what greater diameter than the shank 1 which passes through said aperture and upon the front surface of the plate there is formed a clutch face 12, concentric with said aperture, the central portion of the plate being somewhat enlarged to accommodate said clutch face. The spring 7 acting upon the sleeve 6, serves to normally engage the clutch face 9 with the clutch face 12, this normal position of said parts being shown in the drawings.

Within the slot 8 and contiguous with the front wall thereof, a clutch member 13 is mounted, concentric with the shank 1, said member being held in its proper position by a pair of opposite screws 14. (See Fig. 4).

brought into engagement with the clutch face 13 of the member 13 by subjecting the integral parts 6 and 9 to a forward displacement, overcoming the resistance of the spring 7. It is to be observed that the member 13 has the nature of a ring, having its central aperture equal in diameter to that of the aperture 5.

To the rear of the jaw 4c, a cylindrical feed-nut 15 is threaded upon the shank 1, the forward extremity of said feednut being fitted into the aperture 10 and being provided with an annular groove 15, which receives theextremities of a pair of screws 16, radially mounted in the plate 10, thus allowing the feed-nut to rotate independently of the jaw 41, but establishing a unity of longitudinal motion between the two. Adjacent to the groove 15, the feed-nut 15 is slightly increased in diameter forming a shoulder 16*, adapted to abut against the rear face of the plate 10, when the wrench parts are assembled. The enlarged portion of the feed-nut is provided with two ratchet faces 17 and 18, the teeth forming said faces being reversely pointed, and a collar 19 slidable upon said enlarged portion of the feed-nut is interiorly provided with two diametrally opposite spring pawls 20, respectively adapted to enter into operative engagement with the ratchet faces 17 and 18 in the two limiting positions of sliding displacement of the collar. The pawls 20 are contained in the front portion of the collar 19, and the forward extremity of a sleeve 21 is received by the rear portion of said collar. A screw 22 mounted in said collar and having its extremity entering an annular groove 23 in said sleeve, establishes a unity of sliding displacement between said parts without preventing the collar from undergoing rotation independently of the sleeve. The rear portion of the feed-nut 15 is of a reduced diameter, and in the space formed between said reduced portion and the sleeve 21, there is mounted a coiled spring 24, acting against a flange 24; integrally formed upon the rear end of the sleeve 21, and slidably fitting the reduced rear portion of the feed-nut. A ring 25, having a somewhat greater diameter than the rear portion of the feednut, is secured by screws to the rear face of said feednut, and acts as a stop to limit the rearward displacement to which the parts 19 and 25 may be subjected by the spring 24. In order that the collar 19 may be readily subjected to either an oscillatory rotation or to a sliding displacement, a lever 26 of convenient length is pivotally mounted upon said collar.

In order to carry out the purpose of the invention, it is necessary to establish a unity of rotation between the feed-nut l5 and the integral parts 6 and 9, and to establish this relation in such a manner that a displacement of the collar 19 to its forward limiting position will communicate a corresponding displacement to the parts 6 and 9 and will bring the clutch face 9 into engagement with the clutch face 13*. This result is achieved by mounting the threaded ends of two rearwardly projecting angular hooks 27, at diametrally opposite points in the member 9, said hooks being projected into slots 28 oppositely provided in the forward extremity of the feed-nut-.' The out-turned ends of the hooks 27 are normally spaced slightly from the plate 10 and project a suflicient distance to be engaged by the collar 19 when said collar is subjected to a forward displacement. It is apparent, therefore, that as the collar 19 is shifted to its forward limiting position this movement will be communicated through the hooks 27 to the integral parts 6 and 9, separatingthe clutch faces 12 and 9 and bringing the faces 9 and 13 into engagement, and itis also clear that said hooks will establish a unity of rotation between the feed-nut and the members 6 and 9. In order that the pawls 20 may pass without difliculty from one of the ratchet faces 17 and 18 to the other, during sliding displacement of the collar 19, the indentures forming the teeth of the two faces are gradually decreased in depth at their adjoining extremities. (See Fig. 4). 7

An explanation of the operation and use' of the above described tool will now be given. When the various parts occupy the positions shown in the drawings, an oscillating movement of the lever 26 will produce a rotation of the feed-nut 15 resulting in a gradual displacement of the jaw 4: from the jaw 3. While both of the pawls 20 will bear upon the ratchet face 18 in the specified posit-ion of said parts, it is to be understood that only one'of said pawls will have operative engagement with the ratchet face. hen the lever 26 is being oscillated, the pressure of the pawls 20 upon the ratchet face 18 might possibly cause the feed-nut 15 to share in the reverse rotation imparted to the collar 19 by said lever. This possibility is prevented through the engagement of the two clutch faces 12 and 9 since the face 9 may slip upon the face 12 when the feed-nut is being rotated in the desired direction, but the two faces are interlocked when the collar'19 undergoes the reverse rotation.

When it is desired to close the wrench jaws upon any object, the collar 19 is shifted to its forward limiting position and then subjected to an oscillatory movement. During one of the two strokes comprising each complete oscillation, the feed-nut will be subjected to a partial rotation in the desired direction, during which rotation is the. clutch face 9 will slip upon the clutch face 13. During the other or reverse stroke of the lever, the feed-nut will be held stationary through the interlocking of the two clutch faces 9 and 13 It is to be observed that a considerable portion of the shank 1 adjacent to the jaw 3 need not be threaded, since the feed-nut is spaced a considerable distance from the jaw 3 when the two jaws are closed upon any object.

In a wrench constructed in accordance with the foregoing description, it is possible to shift the sliding jaw rapidly along the shank 1 in either direction by applying a rap-id oscillating motion to the lever 26. Furthermore by employing a leverage in producing rotation of the feed-nut it is apparent that the jaws of the wrench may be clamped very securely upon any object. It is to be further observed that this wrench may be employed in places not accessible to an ordinary wrench owing to the adjustability of the lever 26.

The invention is presented as including all such modifications and changes as properly come within the scope of the following claims.

l/Vhat I claim, is:

1. In a device of the character described, the combination with a threaded shank, of a jaw stationary upon one extremity of said shank, a second jaw slidable upon said shank, but restricted from rotation thereupon, a feed-nut threaded upon the shank adjacent to the sliding jaw, said feed-nut being provided with two adjacent ratchet faces the teeth of which are reversely pointed, means establishing a unity of sliding displacement between the feed-nut and sliding jaw, a collar slidable upon the ratchet portion of the feed-nut, a pair of pawls interiorly carried by said collar and respectively adapted to have operative engagement with the two ratchet faces in the two limiting positions of displacement of the collar, and a lever pivoted upon said collar for applying rotation thereto.

2. In a device of the character described, the combination with a threaded shank, of a jaw stationary upon one extremity of said shank, a second jaw slidable upon the shank but restricted from rotation thereupon, a feed-nut threaded upon the shank adjacent to the sliding jaw and provided with two adj acent ratchet faces having their teeth oppositely pointed, means establishing unity of longitudinal displacement between the feednut and the sliding jaw, a collar slidably mounted upon the ratchet portion of the feed-nut, a pair of pawls interiorly carried by said collar and respectively adapted to have operative engagement with the two ratchet faces in the two limiting positions of sliding displacement of the collar, a lever pivotally mounted upon the collar for applying rotation thereto, and means preventing a reverse rotation of the feed-nut, when such a rotation is applied to said collar.

3. In a device of the character described, the combination with a threaded shank, of a jaw stationary upon one extremity of said shank, a second jaw slidable upon the shank but restricted from rotation thereupon, a feed-nut correlated with the sliding jaw and threaded upon said shank adjacent to the sliding jaw, said feed-nut being provided with two adjacent ratchet faces having their teeth reversely pointed, means establishing aunity of longitudinal displacement between the feed-nut and the sliding jaw, a collar slidable upon the ratchet portion of the feed-nut, a pair of pawls carried by said collar and respectively adapted to have operative engagement with the two ratchet faces in the two limiting positions of dis placement of the collar, a sliding clutch member mounted concentrically with the threaded shank in an aperture of the sliding jaw, a pair of clutch members rigidly carried by the sliding jaw and adapted to be respectively engaged by the sliding clutch member in the limiting positions of the latter, a spring normally holding the sliding clutch member in one of its limiting positions, and means establishing a unity of rotation between the sliding clutch member and the feed-nut, such that a displacement of said collar between its limiting positions in a certain direction, will communicate a similar sliding displacement to said clutch member.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

hi WISDOM 2 MoGILL.

mark Witnesses BUREL SIMs,

AYES MoGLARnoN.

Copies of this patent may be obtained for five cents each, by addressing the. Commissioner of Patents. Washington, D. G.

Images