US2316486A - Supporting base for electric scissors - Google Patents

Description

April 13, 1943 M s, A K 2,316,486

SUPPORTING BASE FOR ELECTRIC SC ISSORS Filed April 18 1942 Wunnum ((lllli jwuc 14401,

' i ilgf 070120021726 (9 61142 6, filthy/wan Patented Apr. 13, 1943 SUPPORTING BASE'FOR ELECTRIC #SCISSORS Malcolm S. Park, Mount Kisco, N. Y., assignor to The Singer Manufacturing Company, Elizalbeth, N. J a corporation of New Jersey Application April 18, 1942, Serial No. 439,469

4 Claims.

This invention relates to electric scissors and more particularly to supporting bases therefor, and has for its objective the provision of a relatively wide base which is readily and quickly attachable to electric scissors.

Another object of this invention is to provide a simple base which may be cheaply and readily manufactured and attached to electric scissors already in use, and which will permit the electric scissors to vibrate relative to the base without imparting vibration or noise thereto.

With the above and other objects in view, as will hereinafter appear, the invention comprises the devices, combinations and arrangements of parts hereinafter set forth and illustrated in the accompanying drawing of a preferred embodiment of the invention, from which the several features of the invention and the advantages attained thereby will be readily understood by those skilled in the art.

In the accompanying drawing:

Fig. 1 is a top plan view of my improved base.

Fig. 2 is a side elevation of the base.

Fig. 3 is a vertical section of the base taken along the line 33 of Fig. 1 and showing the base attached to an electric scissors.

Fig. 4 is a sectional view taken along the line 4-4 of Fig. 1.

In the embodiment selected for illustration It] represents a base made of sheet metal and having the shape of the sole of a sad-iron. To the under surface of the base I there is adhesively applied a layer of felt II which serves to prevent the base from scratching the table or support on which it may be placed. The upper.

surface is formed with a toe portion I2, which is struck up from the sheet metal 'base and has the shape of a toe-cap of a shoe. In rear of the toe portion I2 is a strap I3 which is also struck up from the metal base and in rear of the strap, I3 and in alignment therewith is a rectangularly shaped slot l4, and near the rear end of the slot the base is formed with an overhanging inverted L-shaped lip l5,

Located on the rear or heel portion of the base I0 and in alignment with the toe and strap is a latch member I6 having an inverted U-shaped cross-section and formed with a longitudinal slot I1 and a protuberance I8 for easy manipulation by the finger. The latch member I6 is secured to the base In by means of the two rivets I9 and 20.

My improved base is adapted to be attached to electric scissors of the type illustrated and de scribed in the patent to McArdle et al., No.

2,047,483, dated July 14, 1936. As shown in Fig. 3 of the drawing, the scissors are constructed with a frame 2| having 9. depending portion 22 to which is adjustably secured a lower blade holder 23 having a flange portion 24 and which carries a lower cutting blade 25. To the flange portion 24 there is secured by the rivets 26 a fiat leaf spring 21 having resilient legs or rests 28 and 29. It will be understood that a vibratory upper blade 30 coacts with the lower blade 25 to sever the material.

To attach my improved base to scissors having the above described construction the end of the resilient rest 28 is inserted under the strap I3 and the scissors are pushed forward until the end of the rest is under the toe-cap I2. A slight pressure is then put on the scissors to place a tension on the rests 28 and 29, and at the same time the scissors are moved sideways until the rest 29 is in alignment with the latch I6 and the flange 24 is under the overhanging lip I5. When the scissors are in this position the flange c1 leaf spring support 24 has entered the slot I4 and the latch I6 is then moved from the full to the dotted line position shown in Fig. 3, in which position the forward end of the latch I6 overlies the end of the rest 29 and the base locked to the scissors.

From the above it will be observed that the scissors may be attached to and detached from the base readily, and with the minimum of effort, and that the connection between the base and the scissors is through the resilient spring 21. This construction permits the scissors to vibrate freely relative to the base and allows the operators hand to wobble sidewise relative to the base without disturbing the flat relationship of the base to the supporting table.

Having thus set forth the nature of the invention, what I claim herein is:

1. The combination with an electric scissors having a frame and a lower scissor blade support carried by said frame, of a flat base plate, means carried by said plate for detachably securing one end of said blade support to said base and a manually operable latch mounted on and movable relative to said base plate to detachably connect the other end of said blade support to said base.

2. A base plate adapted to be attached to an electric scissors and having a toe-cap, an inverted L-shaped hold down, and a slidable heellatch disposed at its upper side for its detachable connection to the spring legs of an electric scissors device.

3. A base member for electric scissors having a lower blade support and a leaf spring rest secured at its central portion to the under side of the lower blade support, said base member comprising a flat blade having a slot in its upper face to receive the central portion of the leaf spring rest of the scissors, a strap located at one end of said slot under which one end of said leaf spring is adapted to be inserted and a manually operable device on said plate for releasably confining the other end of said leaf spring rest on said plate.

4. A base plate for supporting an electric scissors having a blade support formed with a flange comprising, a plate having a pointed toe portion and a heel portion, a cap carried by the plate and located at the toe thereof, a latch located on the heel of said plate and slidable to and from said cap, a strap located adjacent said cap, a slot formed in said plate adjacent said strap, and a lip overhanging said slot, all of the above mentioned elements being located on the upper face of said plate and in a position to cooperate with the flanged blade support of said scissors.

MALCOLM S. PARK.

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