US1582442A - Jar-cap opener - Google Patents

Description

April 27 1926. 1,582,442

W. P. WHHTE JAR CAP OPENER Original Filed Jan. 6, 1921 Patented Apr. 27, 1926.

UNITED STATES WILLIAM 1. WHITE,'0F BROOKLYN, NEW YORK,

PATENT OFFICE. I

ASSIGNOR TO ANCHOR CAP & CLO

SURE CORPORATION, OF BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

JAR-CAP OPENER.

Application filed January 6, 1921, Serial No. 435,316. Renewed February 25, 1926.

To all whom it army concern:

Be it-known that I, WILLIAM P. 11111;, a citizen of the United States, residing at Brooklyn, in the county of Kings, State of New York, have invented certain new and useful Improvements in Jar-Cap Openers, of

which the following is a specification.

The ,present invention relates broadly to scaling devices and more specially to a tool for removingjar caps. I v

The principal object of the present invention is to provide a jar cap opener for hermetic side seal caps with the handle thereof rounded to provide strength and rigidity for removing tightly fitting caps.

' Another object of the present invention is a jar cap-opener having a semi-cylindrical handle and a reinforced jaw capable of transmitting pulling stresses on the jaw as longitudinal forces on the rounded handle portion of the opener.

Another object of the present invention is a jar cap opener having a flattened fulcrum end adapted to be seated upon the top of a 5 cap, and a rounded handle whereby the fulcrum prevents rotation of the opener in the operators hand, and the round handle facilitates operation of the device.

A still further object of the present in- 80 vention is a jar cap remover having a jaw below the handle and with a reinforcement between the jaw and the handle to provide clearance for the reception of the flange of a deep skirted jar cap.

Other and further objects of the present invention will in part be obvious and will in part be pointed out herein-after in the specification following by reference to the accompanying drawings forming a part thereof and in which like parts are represented by like characters throughout the several figures thereof.

Figure l is a plan view looking at the bottom of the opener;

Figure 2 is a side View of the opener; Figure 3 is a perspective view of the opener;

Figure 4 illustrates the operation of 'the opener on one form of hermetic seal;

Figure 5 is an enlarged detail of the opener head; j

Figure 6 is an end View looking at the end of the handle; and

portion with the forward edge of the body' portion elxtcnding beyond the side flanges to form lips for engaging a bottle cap. Such prior art devices have been adapted for use with relatively easily removed caps and such devices have not been designed particularly with the idea of utilizing maximum strength. When such devices are utilized to remove large caps such as are tightly hermetically sealed upon packing jars and the like, by being sealed under pressure on the jar, these devices have proven unsatisfactory. \Vhere attempts have been made to increase the size of the cast and wire devices to gain strength, the devices have been unsightly and unwieldy. V here attempts have been made to utilize sheet metal in making the known prior'art designs into more powerful openers, the manufacturing operations become so expensive as to be substantially prohibitive; and the prior art sheet metal shapes, such as flat body portions with forwardly extending flanges, are not sufiiciently strong. due to the designs, unless exceedingly heavy metal is used which increases cost and quickly wears out. Furthermore in using the sheet metal type of openers comprising a fiat body portion with a pair of forwardly extending flanges and a rounded nose it is necessary for the operator to tightly grip the body portion to prevent the device from rolling on the bottle cap or jar cap. VVheresuch devices are utilized to uncap jars the fiat body portion must be gripped With sufiicient tightness as to become uncomfortable in the hand of the operator. I

The present invention overcomes the difiioulties of the known art by providing a jar cap opener which is designed primarily with the idea of disposing of the material in the manner best to sustain the forces necessary to uncaptightly sealed hermetic packages.

ages but primarily for The present invention is designed to be utilized for uncapping various types of packremovin such jar caps as is illustrated in the ull Patent 1,253,492, January 15, 1918. This type of cap sets very tightly against the vessel wall and cannot be readily removed with the known openers of the prior art.

The present invention comprises a sheet metal opener having a handle portion that is rounded to fit the hand and is provide with a fiat fulcrum bar adapted to rest upon the cover part of the cap in such manner as to securely seat the opener on the cap and prevent any tendency of the opener to roll in the hand of the operator. A head engaging jaw is connected with the body portion by means of a pressed bracket, or strut, embossment whereby active cover removing forces are delivered to the handle portion of the device rather than forces which otherwise would tend to bend the bead engaging 1 Referring now to the drawings, the device comprises a handle 1 which is substantially semicylindrical in form and tapers slightly from the outer endtoward the forward end. The forward end of the handle is provided with a pair of arms 2 and 4 which are arched to provide clearance for the flange of the cap to be removed. These arms extend forward substantially parallel and comprise the fulcrum for the operation of the device. tween the arms and maintains the arms rigidly spaced apart but permit the arms to be positively seated on the cap to be removed. Adjacent the handle and beneath the arms is provided the downwardly and forwardly eri'tending cap engaging jaw G. This jaw is curved to clearance beneath the arms 2 and 4 and the jaw is joined to the handle by means of a reinforcement 7 which sustains the jaw in operation and transmits the uncapping forces to the handle 1 as longitudinal forces. This action is illustrated in Figure 5 which shows the stresses in the arms 2 and f as being transmitted by the arrows A to the semicylindrical handle 1, and the arrows B indicate the forces from the cap engaging jaw 6 as also being transmitted to the said semicylindrical handle. The handle being semi-cylindrical in form sustains these forces readily, particularly in view of the fact that a grasp of the hand on the handle imposes forces in the direction of the arrows C, Figure 6, which are in opposition to the un- A flat fulcrum 5 extends be further facilitate capping forces that tend to spread the bandle. In other words, the uncapping forces tend to flatten the curvature of the forces whereas the grip of the 0 erator tends to increase the curvature. his tool has been found to be ca able of manufacture of relatively light weight materials and at the same time be sufficiently strong to remove the tightest hermetic cap without undue efi'ort on the part of the operator.

Having thus described my invention, what I claim is:

' 1. An article of manufacture comprising a cap opener formed from a single piece of sheet metal and having a handle, a curved jaw beneath said handle, a reinforcement bracket comprising an embo'ssment between said'jaw and said handle and adapted to transmit forces from the jaw as compression stresses to .said handle, arched fulcrum means extending forward and over said jaw and being adapted to prevent said handle from rolling when the device is in operation.

2. A cap opener comprising a semi-cylindrical handle, arched arms comprisin extensions of the side walls of the handle, a cap engaging jaw offset below the bottom wall of the said handle, and fulcrum means joining the arched arms, said fulcrum means being substantially in line with the bottom wall of the handle.

3. As an article of manufacture, a cap opener stamped from sheet metal comprising a handle having a pair of arched fulcrum members extending forwardly there of, a fiat bar joining the ends of said members, and adapted to rest on the top of a cap to form a fulcrum, said bar being in substantially the same plane as the bottom of the handle, a cap engaging jaw extending downwardly below the bottom of said handle. and reenforcing means between the jaw and the bottom of the handle to minimize the bending stresses on the jaw when in use by transmitting the same to the handle as compression stresses.

4. As an article of manufacture, a sheet metal cap opener comprising a handle having a pair of arched fulcrum members extending forwardly thereof, a fiat bar joining the ends of said members, and adapted to rest on the top of a cap to form a fulcrum,

said bar being in substantially the same plane as the bottom of the handle, and a cap engaging jaw extending downwardly below the bottom of said handle.

WILLIAM F. HITE.

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