US1045040A - Jar-cover straightener. - Google Patents

Description

B. S. KNUTSON. JAR COVER STRAIGHTENER.

APPLICATION FILED MAY 3.1912.

Patented Nov. 19; 1912.

INVEIVTUR Benme S. Knui'scn Mm E WIT MES-9E8 monwsrs 'To all whom it may concern:

a citizen of the use, a portion being broken away;

.a table or other support UNITED STATES- PATENT BENNIE s. knurson, or STEWARD, rumors.

Specification of Letters Patent.

Application filed May 3, 1912. Serial No. 694,816.

Be it known that I, BENNIE S. KNU'rsoN,

United States,-\ and a resident of Steward, in the county of Lee and State of Illinois, have invented a new and Improved J ar-Cover Straightener, of which the following is a full, clear, and exact description.

This invention relates to household devices, and particularly to means whereby common metal fruit jar. tops 1 may be straightened after being distorted, and used repeatedly, instead of discarding them unnecessarily. It is well known that a fruit jar cover is commonly bent or distorted either in opening the jar or preparatory to opening it, either by means of a tool to admit air or bythe operation of a jar opener applied to the cap. Such a cap must be straightened before it -can be used agam with safety, or else it must be thrown away, a bent cap being unreliable because it is impossible to preserve a jar airtight with such a cap.

Among the objects,-therefore, of this invention, is to provide a device of comparatively cheap and simple nature, whereby the ordinary householder may have and use one for the purpose above indicated.

Reference is to be had to the accompanying drawings forming a part of this specification in which like characters of reference indicate corresponding parts in all the views, and in which1 Figure 1 is an elevation of a preferred embodiment of this invention shown as in Fig. 2 is a vertical section of a part of the device; Fig. 3 is a fragment of a common metal jar cap indicating the nature of a distorted rim or part which renders such a cap useless; Fig. 4 is a modification described be low; and Fig.- 5 is a transverse section on the line 55 of Fig. 2.

As illustrated, this device comprises a frame 10 of any suitable design or construction which may be temporarily clamped to by means of a screw 11. In the upper portion of. the frame is journaled a by a crank 13 or by-any other suitable means. On the opposite end of the shaft 12 is secured a. mandrel nature and shaped to conform to the normal shape of the inner surface of a common shaft 12 adapted to be rotated- 14 of a suitable rigidmetal fruit jar cover 15 which is adapted to be applied on the outside of the mandrel. As indicated in Fig. 3, the flared edge of the cover at 15 is bent out of the normal form, and when applied to the mandrel willbe restored or straightened to its proper shape by the application of suitable means on the exterior of the cover in cooperation with said mandrel.

As shown in Fig. 1, I provide a roller 16 pivotally mounted upon an arm 17 which may be movably connected to the frame as at l8. Any suitable means may be used to keep the roller 16 in proper operative relation to the mandrel, or to withdraw it therefrom, such means being indicated somewhat conventionally by the extension I!) of the lever 17 which may be operated by hand or any other suitable way.

The modification indicated in Fig. 4 differs in the omission of the roller and providing that the end 17 of the lever be made to engage directly with the flange of the cover.

The construction shown in Fig. 2 consists of a die 20 adapted to be applied as by screwing thereon to the exterior of the cover. The thread 21 of the die is adapted to conform to the threaded part of the cover and serves to straighten any irregularities which may have been formed in the thread of the cover, and the lower rim .22 of the die is adapted to cooperate with the opposing portion of the mandrel in establishing aproper shape to the flanged portion of the cover. The die is provided withmeaus in the form of a bail 23 whereby it may be manipulated or held stationary while the mandrel is being turned with relation thereto. In order to secure the die to the jar cover 15 for the purpose of unscrewing the cover, I provide any suitable locking means, the same being indicated as a roller 24 ivoted eccentrically at 25 in the wall of the die. The periphery of the roller 24 is threaded or grooved to conform to the threads above mentioned, and is mounted upon thepivot 25 with sufficient looseness to enable it to cooperate with the thread on the cover, even though when rotating on its axis, due to the gripping effect of the cam.

The several parts of this invention may be made of any suitable materials and the relative sizes and proportions thereof may be varied to suit the standard types of jar Patented Nov. 19, 1912.

\ the mandrel.

covers which are commonly used, without departing from the spirit of the invention.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:-

1. In a device of the character set forth, the combination of a threaded mandrel adapted to snugly receive a jar cover on its outer surface with which the cover is adapted to conform, means to manipulate the mandrel, a die; adapted to be snugly fitted to the outer surface of the cover to co operate with the mandrel, said die having a thread conformingwto the threaded por-V tion of the cover and mandrel, and means to hold the die stationary with respect to the mandrel to control its rotation, and

means on the outside of the cover and cooperating With said mandrel, said means adapted upon rotation thereof independently of the rotation of the mandrel to straighten the distorted edge of the cover.

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

- BENNIE S. KNUTSON.

Witnesses:

O. O. RowLEY, F. P. BURNETT.

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