US1587718A - Automatic scissors - Google Patents

Description

P. GENTELEE ET AL AUTOMATIC SGISSORS Filed July 5. 1 924 a fizi/ lam/Wm s Patented June 8, 1 926.

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PASQUALE GENTILE, OF. YOUNGSTOWN, AND FRANK DE JUTE, 0F NILES, OHIO.

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Application filed July 3, 1924. Serial No- 723,922.

This invention relates to improvements in mechanically operated scissors of a type preferably adapted for use by barbers, the cutting of cloth and the like.

It is well known that broadly mechanical- 1y operated scissors and shears are old, but none of the previous'devic es possesses the construction which adapt them for use by barbers or for ordinary home use, 1n tailor shops, or stores.

The present invention aims to overcome the above drawbacks and to produce mechanially operated scissors of the kind above described having a very simple construction and which are economic to manufacture, having but few parts readily accessible for repair and replacement when necessary.

A. still further object of the mvention is to provide a mechamcally operated SCISSOIS wherein the normal position is out of gear, and which is place in gear by the customary pressure upon the scissors handles or thumb and finger rings.

The invention resides in the sundry detail of construction, combination and arrangement of parts which shall appear as the specification proceeds.

In this specification and the annexed drawings, the invention is disclosed in the form in which it is considered to be the best, but the invention is not limited to such form because it is capable of being em-' bodied in other forms; and it is to be understood that in and by the claim following the description herein it is intended to cover the invention in whatever form it may embody within the scope thereof.

In the drawings which show the preferred embodiment of the invention as at present devised Figure 1 is a side elevation of the scissors with the cover plate of the actuating mechanism removed to show the details of construction.

Figure 2 is a side elevation.

Figure 3 is a sectional view taken on line 3--3 of Figure 1.

Like numerals refer to like and corresponding parts throughout the specifications and drawings.

Referring particularly to the drawings in detail, 1 designates a housing of bronze, aluminum or other suitable metal or alloy, constructed with a cover plate 2.

By referring to Figure 2, it will be seen that this cover plate 2 is held in position by means of inturned edges 3 and 4 formed in the housing 1.

By referring to Figure 1, it will be seen that a blade 5 is secured to the housing 1 at point 6 by means of a set screw 7. The housing 1 is formed with a rear hollow extension 8. The extreme outer end 9 is provided with a finger ring 10.' This rear hol-' low extension 8 is equipped with a worm gear 11 which is held in position by means of bushing 12 and held in place by means of a set screw 13. This worm gear 11 is caused to rotate by means of any ordinary flexible cord connected to the shaft end 14 of the worm gear 11. This flexible cord actuated in any ordinary way known to the art, but more conveniently by means of an electric motor. Secured to the blade 5 by means of a bolt 15 is a blade 16. In order to keep edges 17 and 18 of the blades 5 and 16 in close cutting contact, there has been provided a spring 19, held in position by means of the bolt 15.

By referring to Figure 1, it will be seen that the blade 16 has its rear extension 20, extending into the opening 21 and of reater length than the extension 22 of the b ade 5, the extension 20 being formed with a longitudinal slot 23, preferably closed at its ends. In the assemblage of the device, as can be seen from the drawing, the extension 20 lies adjacent to the cover plate 2 of the housing 1. .A worm wheel 24 is journaled within the housing 1 on a movable shaft 25. This movable shaft 25 is secured to a dove-tailed shaft 26, formed on the outer portion of the housing 1. This dove-tailed shaft 26 is caused to move up or down due to an arm 27, the outer end of which functions within a slot 28, formed in a lever arm 29, which is pivoted to the housing 1 at point 30, by means of a bolt 31. In Figure 1, a bar spring 32 is secured on the rear hollow extension 8 at point 33 by means of a set screw 34 which holds the worm wheel 24 out of mesh with the worm gear 11, by pressing upon the extension 20. The worm wheel 24 has a crank pin 35 secured thereon at a point eccentric to the movable shaft 25, said crank pin 35 having a bushing 36 rotatably mounted thereon and slidably mounted in the longitudinal slot 23 of the extension 20 of the blade 16. It will be seen that I ring 37, which is formed at the end of the lever arm 29, the bar spring32 is depressed and allows the worm wheel 2% to engage the worm gear 11, thereby, placing the scissors in automatic action. It is obvious that by releasing the pressure on the finger rings 10 andST, the automatic scissors is caused to become out of gear. 111 operating an ordinary pair of scissors this particular moven'ient of the finger rings is used, that is, when pressing two finger rings of an ordinary scissors together, the blades are forced into a cutting motion; It is evident, therefore, that the manner in which this automatic scissors is operated conforms to the movement common to the operation of operating ordinary scissors and, therefore, makes the manipulation of the device easy to control to get cutting action when desired.

What we claim is:

A mechanicall operated scissors, comprising a relatively at housing, a pair of 8018501 blades supported and extending from one end of the housing in substantial alignment therewith and pivoted together beyond the housing, a slidably mounted worm Wheel within said housing, a worm gear positioned within said housing, means for actuating said worm gear, a lever control means pivoted within said housing for the purpose of engaging and disengaging said worm wheel and worm gear, substantially as described for the purpose set forth.

In testimonywhereof we afiix our tures.

signa- PASQUALE GENTILE. FRANK DE JUTE.

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