US2561039A - Bobby pin stripping device - Google Patents

Description

July 17, 1951 R. K. WEAVER BOBBY PIN STRIPPING DEVICE 5 Sheets-Sheet 1 Filed May 15, 1948 July 17, 1951 R. K. WEAVER BOBBY PIN STRIPPING DEVICE 5 Sheets-Sheet 2 Filed May 15, 1948 .H HHflHw i l flL 191M622 for: fa iiz A. l/eafer July 17, 1951 R. K. WEAVER BOBBY PIN STRIPPING DEVICE 3 Sheets-Sheet 5 Filed May 15, 1948 Patented July 17, 1951 BOBBY PIN STBIPPING DEVICE Ruth K. Weaver, Chicago,-Ill., assignor to Gaylord Products, Incorp corporation of Illinois" rated, Chicago, 111., 2.

Application May 15, 1948, Serial No. 27,351

Claims.

This invention relates to improvements in a bobby pin stripping device and is more particularly concerned with the provision of a device adapted for use in transferring bobby pins from an oven wire to a strip of cardboard.

. In the manufacture of bobby pins, they are mounted upon oven wires for operations, such as heat treatment, japanning, baking, etc. After the bobby pins have reached their finished form, it is necessary to remove them from the oven wire, which operation is referred to in this art as a stripping operation.

The present invention contemplates the proyision of a relatively simple device adapted to re ceive an oven wire having a plurality of bobby pins mounted thereon in spaced parallel relation, said device embodying means for engaging and spreading the legs of the bobby pins to permit removal of the oven wire and insertion of a strip of cardboard. The strip of cardboard, with the bobby pins mounted thereon, is then removed from the device for a subsequent carding operation in which, the bobby pins are removed from the strip of cardboard and placed on printed cards suitable for distribution and sale.

' This invention further contemplates the provision of a stripping device which is relatively simple in operation, inexpensive in construction and which will not readily get out of order.

This invention embodies other novel features, details of construction and arrangement of parts which are hereinafter set forth in the specification and claims, and illustrated in the accompanying drawings, wherein:

Fig. 1 is an end elevational view illustrating a bobby pin stripping device embodying features of this invention.

Fig. 2 is a top plan view of same.

Fig. 3 is a transverse sectional view taken along the line 3-3 of Fig. 2, showing an oven wire loaded with bobby pins positioned within the device.

Fig. 4 is a transverse sectional view corresponding to Fig. 3 in which, the legs of the bobby pin are shown in spread position, the oven wire re moved, and a strip of cardboard positioned between the spread legs of the bobby pin.

Fig. 5 is a detail plan view illustrating the manner in which the hobby pins are mounted upon an oven wire prior to the stripping operation.

Fig. 6 is a detail plan view illustrating the manner in which the bobby pins are applied to a strip of cardboard.

Fig. 7 is an end elevational view of same.

Referring now to the drawings for a better understanding of this invention, the bobby pin stripping device is shown as comprising a pair of end frame members 2-2 which are secured in spaced parallel relation to a table top 3 by any suitable means, such as screws or bolts, not

shown. A back plate 4 is supported at its ends uponthe frame members 22, and is secured thereto by means of cap screws t. The back plate 4- is provided with an upturned flange portion 1 for engagement by a plurality of bobby pins 8 mounted upon an oven'wire 9, and is also provided with an abutment strip 1 I which is secured in position by means of screws I 9. The upturned flange l and abutment strip II are of substan-. tially the same length as the back plate 4.

A fixed bobby pin spreading plate I2 is secured to a shaft 13 journaled at its ends in bearing members l4-l4 which extend upwardly from their frame members 22. The free end of the spreading plate [2 is bent downwardly at l6 to engage the ends of the uncrimped legs of the bobby pins 8. The spreading plate 12 is provided with a handle, or finger engaging portion, ll for pivoting the spreading plate 12 from its bobby pin engaging position, illustrated in Figs. 3 and 4; to its inoperative position, illustrated in dotted outline in Fig. 1. When the spreading plate I2 is in its inoperative position, it rests upon a bracket [8 secured to the back plate 4 by means of cap screws 59.

A movable bobby pin spreading plate I9 is secured to a shaft 2| journaled at its ends in a pair of bearing apertures formed at the free ends of a pair of arms 2222a. The free end of the movable spreading plate ll is bent downwardly at 23 to engage the free ends of the crimped legs of the bobby pins 8. The movable spreading plate 19 is adapted to be pivoted from its operative position, illustrated in Figs. 3 and 4 to an inoperative position, illustrated in dotted outline in Fig. 1. The arms 22-2'2a are keyed to a shaft 24 journaled at its ends in the frame members 72-2.

A lever 26 is also keyed to the shaft 24 and has its free end bifurcated to receive one end of a connecting link 27. The free end of the lever 26 and the adjacent end of the connecting link 21 are provided with apertures to receive a bearing pin 28. The lower end of the connecting link is pivotally connected to a foot pedal 29 by means of a bearing pin 3|. The foot pedal 29 is mounted for pivotal movement on a pivot pin 32 provided on a pedal base 33, and a compression spring 34 is interposed between the pedal 29 and the pedal base 33 to yieldably resist downward pivotal movement of the pedal. A fulcrum bar 36 is provided to normally engage against the crimped legs of the bobby pins 8, and is supported upon the outer ends of a pair of arms 31-31 which have their inner ends secured in apertures formed in a shaft 38. The ends of the shaft 38 are journaled in bearing apertures formed in the frame members 2-2. A compression spring housing 39 is secured to one of the frame members 2 by means of cap screws 4|, and is provided with a cylindrical bore to receive a Compression spring 42. The compression spring 42 engages against apin 43 provided on the shaft 38, and acts 3130 yieldably resist rotational movement of the shaft 38 in a counterclockwise direction, as illustrated in Figs. 3 and 4. An arm 14 is provided on one end of the shaft 38 for engagement by a pin 46 provided on the :arm22a when the latter is caused to move outwardly and downwardly by downward pressure :exerted .upon the foot pedal 29.

In the operation of the device thus described and illustrated in the drawings, the spreading plates 12 and I9 are first disposed in their inoperative positions, as illustrated in dotted outline in Fig. 1. Thefoot pedal "-29 is then pressed downwardlyto move the fulcrum rod 36 away-from the upturned flange 1 of theplate 4. The operator then positions an oven-wire 9,-with a plurality of bobby pins 8 thereon, in position between the upturned flange 1 and the fulcrum rod 36, the loop ends of the hobby pins being in engagement against the abutment strip I l. The operator then releases thefoot pedal 29 to permit thefulcrum rod 36 to move into engagement against the crimped legs of the bobby pins. The fixed spreading plate l2 and the movable spreading plate 19 are then pivoted to their operative position in which their respective downturned flanges l8 and 23 engage the free ends of the legs of the bobby pins 8, as illustrated-in Fig. 3. When'the foot pedal 29 is moved downwardly, it then passes through the connecting link 2'L'lever 26, shaft 24, arms 22-220, and movable spreading plate l9 to draw the crimped legs of the bobby pins 8 away from the uncrimped legs. By referring to Fig. 4 in the drawing, it will be noted thatthe movable spreading plate l9 acts-to bend the crimped legs of the bobby pin outwardly about the fulcrum rod 36. To prevent bending the crimped legs of the bobby pins beyond their elastic limits, the compression spring 42 is provided to yieldably-resist outward movement of the fulcrum rod 36.

When the legs of the bobby pins 8 have-beep spread to their open positions, as illustrated in Fig. 4, the oven wire 9 is removed and a strip of cardboard 41 is inserted'between the legs of the bobby pins, the forward edges of the strip of cardboard resting upon a pair of shoulders 48-48 provided on the frame members 2-2. The foot pedal 29 is then released to permit the compression spring 34 to act through the conneoting link 21, lever 26, shaft 24 and arms 22-22a-to return the movablespreading plate P9 to=its first position, as illustrated in Fig. '3. The spreading plates 12 and H! are then pivoted to their inoperative positions, illustrated in dotted outline in Fig. 1. The foot pedal 29 is then moved downwardly to move the fulcrum rod 36 out'of contact with the'bobbypins 8, and the card '41, with bobby pins thereon, is removed from the device for subsequent carding operations.

While this invention has been shown in "but oneform, it is obvious to those skilled in the-art that-it-is-not so limited but is susceptible of-various changes and modifications without departing from the spirit and scope of the claimed invention.

Iclaim as myinvention:

1. In a device for transferring bobby pins from an oven wire ontoa strip of cardboard, a'bobby pinsupporting plate formed with a working face, a :fulcrum bar to normally hold a hobby :pin

.if-rom said supporting plate, a holding plate to engage the free end of one leg of a bobby pin,

.a spreading plate to engage the free end of the other le of a bobby pin, and means to move :saidspreading plate relative to said holding plate to ,open and .close the legs of said bobby pin.

2. In a ,device ,for transferrin bobby pins from :an oven wireonto a strip of cardboard, a hobby pin supporting plate formed with a Working face, -a fulcrum bar to normally hold a hobby pin against .the working face of said supporting plate, means to move said fulcrum bar away from said supporting plate, a holding plate to engage the free end of one leg of a bobby-pin, a spreading plate to engage the free end of the other'leg of a'bobby pin, and means to move said spreading plate relative to said holdin plate to open and close the legs of said bobby pin, and

resilient means to-yieldabiy resist movement of said fulcrum bar away from said supporting plate.

3. 'In a device for spreading bobby pins to-permit removal of an oven wire straddled 'by said pins and to permit the'disposition of a cardboard strip in straddled position between the legs of said pins, 'means for supporting a bobby pin carrying a straddled oven wire between its legs, means for spreading the legs of said pin relative to each other to permit removal of said oven wire and the insertion of a cardboard strip between said spread legs, and fulcrum means engageable with the side of a leg of the pin about which said leg is flexed by said spreading means.

4. Tn a device for spreading bobby pins to permit removal of an oven wire straddled by said pins :and to permit thedisposition of a cardboard strip in straddled position between the legs of said pins, means for supporting abobby pin car rying -a straddled oven wire between its legs, means for spreading-the legs of said pin relative to'each other to permit removal of said oven wire and the insertion of a cardboard strip between said spread legs, and fulcrum means yieldably engageablewith the side of a leg of the pin about which said leg-is flexed by said'spreadin -means, said-fulcrum means having a-substantially con-'- vex fulcrum. Surface.

5. ,In a device for spreading bobby pins to permit removal of an oven wire straddled by said pins and to permit the disposition-of a cardboard strip in straddled position between the legs of said pins, means for supporting a bobby pin carrying a straddled oven wire between its legs,

means for moving one 'leg away from the oppo'sed le to spread the legs of the pin to permit'removal of said oven wire and the-insertion of a flat strip between saidspread'legs, and fulcrum means engageable with the side of said moved leg between the U-bend of the pin and point at which the leg-movin force is applied about'which said legis flexed.

RUTH K. WEAVER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,907,007 Robertson May 2, 1933 :1,95 9A31 King May .22, res-i

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