US2512862A - Thread clip scissors - Google Patents

Description

June 27, 1950 ,NGWER 2,512,862

THREAD CLIP SCISSORS Filed Aug. 4, 1948 E 7 E INVENTOR.

MAX INGWER Patented June 27, 1950 THREAD CLIP sorssons,

Max Ingwer, New York, N. Y., assignor to Consolidated Sewing Machine & Supply 00., Inc., New York, N. Y., a corporation of New York Application August 4, 1948, Serial No. 42,409

3 Claims. (01. 30-332) The invention herein disclosed relates to the construction of scissors for clipping threads.

These devices are used by tailors and it is important that they be of a form which can be quickly picked up and grasped in the fingers, be easy to operate and be fast and accurate in action.

It is desirable also that these so-called thread clippers be of small size, light weight and noncomplicated structure, be of a lasting, durable character, consist of but few parts and be of low cost.

All these and other desirable results are attained in the present invention through the novel features of construction, combinations and relations of parts as hereinafter described and illustrated in the accompanying drawing.

In the drawing referred to, a single practical embodiment of the invention is illustrated but it will be appreciated that structure will be modified and changed as regards this illustration, all within the true intent and scope of the invention as hereinafter defined and claimed.

Fig. 1 in the drawing is a front elevation of a thread clipper embodying the invention;

Fig. 2 is an elevation of the reverse side of the clipper;

Fig. 3 is a top plan or edge view of the device;

Figs. 4., 5, 6 and 7 are enlarged cross sectional details as on the correspondingly numbered planes indicated in Fig. 2, only one, the lower, blade being shown in Figs. 6 and 7.

The two blades constituting the scissors are designated 9 and Ill and they are shown pivotally connected by a screw ll passing freely through the first, front or top blade 3 into a screw seat ii in the back or lower blade Hi.

The latter has a finger 100p l3 and the upper and lower edges of both blades are suitably rounded so that necessary finger pressure can be applied for closing the blades against the opening tension applied by the spring 14.

The spring is shown coiled about the shank of the pivot screw and as having its opposite ends engaged at l5, N5, in openings in the two blades.

To accommodate the spring between the blades the front blade is shown as having a laterally ofiset portion ll of a longitudinal extent just sufiicient to freely receive the coils and terminal end portions of the spring.

Both blades are shown as having longitudinal extensions to the rear of the pivotal connection, arranged in laterally overlapping relation to serve as companion stops limiting the opening movement of the blades.

In the illustration the lower or back blade has a substantially straight rearward extension l8 and the front or top blade has a laterally bent extension l9 overlying the extension l8.

With this construction all bending operations are on just the one blade, the front blade 9, and these involve merely a forward offset H in the locality of the hand screw and an angular deflection [9 on the end of the rearward extension of that blade. These forward and rearward offsets in the blade may be both imparted in a single die operation.

The closing movement of the two blades is limited in the present disclosure by striking an integral lug 29 out of the back blade Ill in position for engagement by the lower edge of the front blade in the non-cutting portion adjacent the pivot connection.

The construction is particularly simple and consists of just the four parts, the two blades, pivot screw and spring. No milling or machining operations are required. Both the opening and the closing stops are integral with the blades and so no separately applied parts are required.

The construction is of a durable character and can be produced and assembled at a low cost. The spring is fully housed between the blades and this is accomplished without cutting away the material of the blades.

The blades can be made of relatively light, thin stock and the device as a whole is light in weight and of small size, convenient to be picked up and used.

What is claimed is:

1. A thread clip scissors comprising companion blades pivotally connected together and having integral extensions to the rear of the pivotal connection in relatively overlapping relation to constitute abutments limiting the opening movement of the blades and one blade having a laterally offset portion about the pivotal connection providing space between the blades in the pivotal region and a blade opening spring located in said space and arranged to apply opening force to the blades.

2. A thread clip scissors comprising a lower blade having a finger loop and an integral projection adjoining the same, an upper blade having a laterally offset portion, a pivot screw connecting the blades and extending through said laterally offset portion and a blade opening spring engaged about said pivot screw and located in the space provided by said laterally offset portion of the upper blade.

3. A thread clip scissors comprising a lower blade having a finger loop and an integral projection adjoining the same, an upper blade having REFERENCES CITEfi a laterally offset portion, a pivot screw connect- The following references are of record in the ing the blades and extending through said later- I ally ofiset portion and a blade opening spring me of this patent engaged about said pivot screw and located in 5 UNITED STATES PATENTS the space provided by said laterally offset portion of the upper blade, both blades having longitu- Number Name Date dinal extensions in rear of the pivotal connection 770,347 own sent. 20, 1904 and the extension of one of said blades being 6, Schrade June 6,1916

bent out of line with that blade to engage the 10 1,531,903 Cummins M813 1925 extension of the other blade.

MAX INGWER.

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