US2431550A

US2431550A - Screw top jar wrench

Info

Publication number: US2431550A
Application number: US655924A
Authority: US
Inventors: Hartwell H Gary
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-03-21
Filing date: 1946-03-21
Publication date: 1947-11-25
Anticipated expiration: 1964-11-25

Description

Nov. 25, 1947.

H. \H. GARY 2,431,550

SCREW TOP JAR WRENCH Filed March 2l, 1946 IN V EN TOR,

HarZwe ZZ ary,

BY MM) ATTORNEY.

Patented Nov. 25, 1947 c E S PTEN T' CFF lIC E.

SCREW TOP JAR WRENCH Hartwell H. Gary, Norfolk, Va.

Application March 21, 1946, Serial No. 655,924

` 1 Claim.

My invention has for its objects:

First, to provide a simple and effective device for removing screw caps from jars in an easy and eiective way.

Second, to provide a wrench which can be mounted on a wall or similar support.

Third, to provide a wrench which will automatically grip the jar closure when the closure is placed in the jaws, with a grip that will not slip.

Fourth, to provide a wrench which will t all the usual sizes of screw tops for jars of various kinds.

Other objects will in part be obvious and in part be pointed out hereinafter.

To the attainment of the aforesaid objects and f ends invention also resides in those novel details of construction, combinations and arrangements of parts all of which will rst be fully described and then be specically pointed out in the appended claim reference being had to the accompanying drawing in which:

Fig. 1 is a perspective View of my wrench on a small scale.

Fig. 2 is a top plan view of the same.

Fig. 3 is a top plan view of the Wrench on a larger scale and showing how it is used.

Fig. 4 is an end view of the same looking in the direction of the arrow a in Fig. 3.

Fig. 5 is a detail view on the scale of Figs. 1 and 2 showing a modification hereinafter specifically referred to.

In the drawing in which like numerals and letters of reference indicate like parts in al1 the figures, 3 is a bracket having a wall engaging mounting plate that is provided with holes 2 to receive screws for securing the tool to a wall or support.

Integral with the bracket 3 is a rigid arm 4 having a toothed or serrated jaw 5 and carrying a guide bar or spacer 6 which, as shown in Fig. 4 lies in a plane above that containing the arm 4 a distance sufficient properly to space and guide the jar top T to be gripped by the jaws 5 and I I. 'I'he arm 4 carries a stud I to cooperate with a jaw-spacing and adjusting brace I4.

A movable arm 9 lies in the plane of the arm 4 except for an offset portion 9a which lies over and on the bracket 3 to which it is joined by a stud 8 passing through a slot I (or IISa or I UX as the case may be) in the arm portion 9a. The arm 9 has the serrated jaw II and is also provided With a guide bar or spacer I2 that lies in the same plane as that of the guide bar or spacer 6 and for the same purpose.

The

arms

4 and 9 are adjustably connected by an adjustable jaw spacer and brace I4 which is pivoted to the arm 4 as at I3 and has undercut notches I5 to engage with the stud 1. A spring IB is connected to the tongue 9 and to the spacer I4 and serves continuously to hold the spacer in contact with stud I, and to cause arm 9 to be drawn up to engage stud 8 at the lower or outer end of the slot I0 (I02L or IOX) when not in use. A nger piece I'I is provided by means of which the spacer I4 may be manipulated.

After securing the tool to the Wall it is used as follows: Place the top T of the container against the left hand jaw 5 and adjust the tool for size by pulling the spacer I4 to close the jaw II on the top T. Push the top into the jaws as far as it will go or until the inner end of the slot I0 (or Illa, IDX) is against the stud 8. Turn the container (using both hands) until the top is loose. On turning the container the jaws 5 and II will bite into the top T and by virtue of the relationship of studs 1, I3 and 8, spacer I5 and slot I0 (or Illa, IllX as the case may be) the turning movement tends to draw the jaw II towards the jaw 5, thereby tightening the grip on the top and preventing slipping.

The slot through which the stud 3 passes may extend parallel to the sides of the arm 9, I prefer however to angle the slot as shown in Figs. 2 and 3 at Illa so that its outer end will be nearer to the arm 4 than its inner end. The slot may have more of an angle than is shown in Figs. 2 and 3. For example, as shown in Fig. 5 the slot I 0x is about 45 to the lower edge of the tongue 9, 9a. The more inclined the slot is the greater the grip on the top T. However, I do not Wish to be limited to any specific angle of inclination for the slot I0, Illa, I 0X.

From the foregoing description taken in connection with the accompanying drawing it is thought the construction, operation and advantages of the invention will be clear to those skilled in the art to which it appertains.

What I claim is:

A tool of the class described which comprises a bracket for securing rigidly to a wall, said bracket having a xed arm terminating in a gripping jaw; a movable arm having a gripping jaw at one end and an elongated slot in its other end extending longitudinally of the movable arm; a pivot stud passing through said slot and secured to said bracket; a jaw spacer pivoted to said movable arm and having notches; a stud xed to said fixed arm with which stud said notches of the spacer engage; and means continuously acting to maintain engagement between said spacer and said last named stud, and top-guide and le of this patent:

UNITED STATES PATENTS Name Date Balz June 18, 1935 Johnson et a1 Dec. 8, 1936 Knowles Dec. 4, 1945 FOREIGN PATENTS Country Date France Jan. 6, 1930 (1st Addition to #643,405)l