US2128758A

US2128758A - Clamping pin device for smoothing and tightening fabrics for cutting goods for clothing

Info

Publication number: US2128758A
Application number: US165157A
Authority: US
Inventors: Prati Armando
Original assignee: Individual
Current assignee: Individual
Priority date: 1937-09-22
Filing date: 1937-09-22
Publication date: 1938-08-30
Anticipated expiration: 1955-08-30

Description

Aug. 30, 19380 A, CLAMPING PIN DEVICE FOR SMOOTHING AND TIGHTENING FABRICS FOR CUTTING GOODS FOR CLOTHIN Filed Sept. 22, 1957 INVENTOR firmer/e 0 Pia-la ATTORNEY Patented Aug. 30, 1938 PATEL T or ice GLAMPIN G PIN DEVICE FOR SMOOTHING AND TIGHTENING FABRICS FOR CUTTING GOODS FOR CLOTHING Armando Prati, Brooklyn, N. Y. Application September 22, 1937, Serial No. 165,157

Claims.

This invention relates to new and useful improvements in a clamping pin device for smoothing and tightening fabrics for cutting goods for clothing.

5 The invention has for an object the construction of a device as mentioned which is characterized by a table upon which a roll of fabric may be placed, a'pin support member beneath said table having projecting pins extending through apertures in said table to the top thereof and adapted to hold the end of said roll of fabric.

It is proposed that anotherportion of the roll of fabric be held down by the use of tacks. The area between these held portions is held tight and is used for cutting out the patterns of garments.

Still further the invention contemplates the provision of a means for holding said pin support member in various vertical positions so that it is possible to control the extent to which the pins project from the top of the table.

Still further the invention proposes the provision of a clamp strip with slots for the projecting pins movably supported on the top of said table to clamp down on the table and over the pins.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the append- V ed claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawing forming a material part of this disclosure:-

Fig. l is a fragmentary plan View of a table with a clamping pin device constructed according to this invention.

Fig. 2 is an elevational View of the device shown in Fig. 1.

Fig. 3 is an end viewtaken on the line 33 of Fig. 1.

Fig. 4 is a horizontal sectional view taken on the line 44 of Fig. 3.

Fig. 5 is a fragmentary enlarged sectional view taken on the line 55 of Fig. 3.

Fig. 6 is a fragmentary plan view looking in the direction of the line 6-6 of Fig. 5.

Fig. '7 is a sectional view similar to Fig. 5 but illustrating a. modification of the invention.

The clamping device, according to this inven- 50 tion, is used in conjunction with a table If) adapted to receive a roll of fabric I l ,the end portion of which is extended over the table. A'pin support member I2 is arranged beneath the table and is provided with a plurality of projecting pins 13 extending through apertures M in the table to the top thereof. The free end of the fabric I l is engaged on the projecting pins l3 so that it is held firmly. The fabric is secured by a line of transverse tacks H5. The area between the tacks l5 and the pins l3 is used for cutting out pat- 5 terns of garments and the like.

A means is provided for holding the pin support member l2 invarious vertical positions and includes a pair of follower bushings Il mounted on the side of the pin support member l2 and threadedly engaged by screws l8. These screws l8 are rotatively supported at their upper ends l8 and extend downwards. These screws are connected for unitary rotation. Each screw I8 is provided with a gear l9, and these gears are connected together by a chain 20. One of the gears 89 has a handle 2! associated with one side thereof by which it may be turned.

The screws l8 are provided with stop pins E3 to limit the lower motions of pins i3. 201

.A means is provided for rotatively holding the lower ends of the screws l 8. This means includes

rigid straps

22 and 23 mounted upon the underside of the table top and connected with bearings 24 coaxially of the gears and rotatively supporting the screws l8. Rotations transmitted to the screws 18, cause the follower bushing l! to move upwards or downwards and so lift or lower the pin support member l2.

The table l0 comprises a main portion lfl upon which the roll of fabric is positioned. At one side the table has an extension portion lll It is this extension portion which is provided with and supports the screws l8. The extension portion W is secured upon the edge of the table portion lfi by the use of fastening elements 26 (see Fig. 5).

A clamp strip 21 is provided, which is adapted to engage along the edge of the table portion lit and is formed with a plurality of slots or openings 2'! through which the pins l3 may project. This clamp strip has a flange portion 21 by which it is attached to a pair of parallel arms 28 extending at right angles thereto. Each of these arms is substantially of inverted U-shape. At their rear ends these arms 28 are secured to a shaft 29 which is rotatively supported on standards 30. These standards 36 are clamped by screws 3i upon a pair of vertical posts 32 which are mounted on the table portion It From each of the standards 30 there projects a finger 33, extended over into the path of pivoting of the arms 28. Each of these'fingers has an adjustment screw 3Q adapted to be adjusted to limit the amplitude through which the arm 28 lowers ll.

may pivot. Tension springs 35 are secured at one of their ends to lugs 36 mounted upon the end of the table portion lll These lugs are arranged in a vertical line with the shaft 29. The upper end of each of the springs 35 is attached to a pin 31 mounted on the arm 38.

These pins 3'! are so positioned that normally, with the clamp strip 2'! in its lowered position, as shown in full lines in Figs. 2 and 5, the springs 35 act to urge the clamp strip downwards. But if the clamp strip is manually moved to pivot the arms 28 anti-clockwise as viewed in Fig. 2, the

springs 35 will pass the dead center of a plane.

extended through the axis of the shaft 29 and the lugs 36. Now the springs 35 will act to hold the arms 38 in their lifted or raised positions as shown by the dot and dash lines in Fig. 2.

' In Fig. '7 a modified form of the invention has been disclosed in which a means is provided for automatically changing the tension of the springs 35 when the position of the pin support member 52 is varied. This means includes a lever 39 for each of the followers il Each lever 39 is connected by a pintle 40 to one of the fol- Each lever 39 is pivotally supported intermediate of its ends by a bracket 4! which is mounted on the table portion l The outer end of each lever 39 has an upward extending portion 3% and the lower end of the ;spring 35 is connected to this portion 39 The arrangement is such that when the screws l8 are turned to move the followers ll and consequently the pin support member 52 downwards so as to retract the pins E3, the levers 39 will .pivot to 'reduce the tension of the springs 35 and so reduce the downward pressure of the clamp strip 21. Vice versa, when the screws l8 are turned to further extend the pins [3 the levers 39 will pivot to increase the tension of the springs 35. The front ends of the levers 39 are provided with slots 42 in which the pins 48 work so that it is possible for the followers ll to move in the vertical direction while the ends of the levers l9 move in arcuate paths.

The operation of the device is as follows:- When the arms 28are in their raised positions the clamp strip 2'! will be off the pins l3. The free end portion of the roll of fabric H is engaged on the pointed end of the pins. The clamp 0 strip 2'? is then moved downwards to engage over the pointed ends of the pins and hold the fabric against coming off. The springs 35 will hold the arms 28in either their lowered or raised positions. In their lowered positions'resilient pres- ;sure is being applied on the cloth portion over the pins it. In their raised positions they are arranged and held substantially as shown in Fig. 2 by the set screws 34. The roll of fabric H is then rolled over the table Ill and has a portion adjacent the roll that is secured down by the line oftacks IS. The fabric is now made tight and it is possible to cut out the fabric according to patterns to make garments.

While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as detightening fabricsfor cutting goods for clothing comprising a pair of posts vertically mounted on a table, collars adjustably mounted on said posts, a rod turnably mounted between said collars, radial fingers on said rods and'having free ends, a clamp strip with slots for projecting pins supported upon the free ends of said radial fingers, a pin support member beneath said table and having projecting pins extending through apertures in the table to the top'thereof, and means for holding said pin member in various vertical positions, comprising a pair of followers mounted ported upon the free ends of said radial fingers,

a pin support member beneath said table and having projecting pins extending through apertures in, the table to the top thereof, and means for holding said pin member in various vertical positions, comprising a pair of followers mounted on said pin member, a pair of rotatively supported screws threadedly engaging said followers, and means for turning said screws in unison, comprising gears mounted upon the screws, a chain connecting said gears, and a handle for turning one of the gears. g

3. A clamping pin device for smoothing and tightening fabrics forcutting goods for clothing, comprising a pin support member beneath a table and having projecting pins extending through aperturesin said table to the top thereof, means for holding said pin support member in various vertical positions, and a clamp stripwith slots for said projecting pins movably supported on the top of said table to clamp down on the table and over said pins, arms supporting said clamp strip, resilient means connected with the clamp strip and urging it downwards over the projecting pins, and an arrangement whereby when said arms are raised the resilient means will act to hold them in their raised position.

4. A clamping pin device for smoothing and tightening fabrics for cutting goods for clothing, comprising a pin support member beneath a table and having projecting pins extending through apertures in said table to the top thereof, means for holding said pin support member in various vertical positions, a clamp strip with slots for said projecting pins movably supported onthe top of said table to clamp down on the table and over said pins, a pair of parallel arms supporting said clamp strip, each of said arms being of inverted U-shape with the clamp strip mounted on one of the endsthereofla shaft supporting the other of the ends of said arms, springs connected between, portions of said arms and said table top to urge the arms downwards and when the arms are pivoted to hold the arms upwards, and stops for holding s'aidarms in said raised positions.

5QA clamping pin device for smoothing and tightening fabrics for cutting goods for clothing, comprising a pin support member beneath a table and having projecting pins extending through apertures in said table to the top thereof, means for holding said pinsupport member in various vertical positions, a clamp strip with slots for said projecting pins movably supported on the top of said table to clamp down on the table and over 1 said pins, a pair of parallel arms supporting said clamp strip, each of said arms being of inverted Ushape with the clamp strip mounted on one of the ends thereof, a shaft supporting the other of the ends of said arms, springs connected between portions of said arms and said table top to urge the arms downwards and when the arms are pivoted to hold the arms upwards, and stops for holding said arms in said raised positions, each of said springs being connected with a lever pivotally mounted, and means connecting said lever indirectly with said pin support so that when the pin support is moved upwards the tension of said springs are increased, and when moved downwards the tension of said springs is slackened.

ARMANDO PRATI.