US783786A

US783786A - Machine for stretching wire-cloth on door or window frames.

Info

Publication number: US783786A
Application number: US20005804A
Authority: US
Inventors: William A Hoffman; George Gosch
Original assignee: Individual
Current assignee: Individual
Priority date: 1904-03-25
Filing date: 1904-03-25
Publication date: 1905-02-28
Anticipated expiration: 1922-02-28

Description

No. 783,786. PATENTED FEB. 28, 1905. W. A. HOFFMAN a G. GOSOH.

MACHINE FOR STRETCHING WIRE CLOTH ON DOOR OR WINDOW FRAMES.

APPLoATIoN FILED MAR. 25, 1904.

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No. 783,786. PATENTED FEB. 28, 1905. W. A. HOFFMAN df, G. GOSCH. MACHNE FOR STRETGHING WIRE CLOTH ON DOOR OB. WINDOW FRAMES.

APPLIOATION FILED MAB.. 25, 1904.

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Patented. February 28, 1905.

l/VILLIAM A. HOFFMAN AND GEORGE GOSCH, OF EAU GALLIE, FLORIDA.

MACHINE FOR STRETCHING WIRE-CLOTH ON DOOR Oli WINDOW FRAMES.

SPECIFICATION forming part of Letters Patent No. 783,786, dated February Q8, 1905.

Application iled March 25, 1904. Serial No. 200,058.

To all whom t muy concern:

Be itknown that we, WILLIAM A. HOFFMAN and Geenen GosoH, citizens of the United States, residing at Eau Gallie, in the county oi" Brevard and State of Florida, have invented certain new and useful Improvements in .Machines for Stretching Vire-Cloth on Door or Window Frames, of which the following' is a speciiication.

rlhis invention appertains to means for stretching fabric, such as wire-cloth, upon iframes in the manufacture oi screen-doors, windows, and the like.

ln its organization the machine comprises a table for supporting the door or window frame, means for supporting a bolt of the goods or screen-cloth at one end of the table, a clamp for holding thescreen-cloth when spread u pon the trame, operating means for moving' the trame to place the screen-cloth under tension, and a detent mechanism for holding' the operating means after the screen-cloth has been tightened and during the operation of securing the same to the frame.

The invention consists oi' the novel features, details of construction, and combinations of parts, which hereinafter will be more particularly set forth, illustrated, and finally claimed.

ln the accompanying drawings, 'Forming a part o'lvl the speciiication, Figure 1 is a perspective View of amachine embodying the in vention. Fig. 2 is a transverse section on the line 2 2 ot' Fig. 1. Fig. 3 is a view of the machine inverted. Fig. 4t is a longitudinal section on the line t 4 of Fig'. 3 looking in the direction oi' the arrow. Fig. 5 is a cross-sec'- tion of the machine on the line Z Z of Fig. 3.

Corresponding and like parts are referred to in the 'following description and indicated in all the views of the drawings by the same reference characters.

rihe table or stand may be of any construction and size, according to the character of work. As shown, the stand comprises the bed or top 1, side pieces 2, legs 3, and crosspieces 4. The parts may be of any suitable are mounted the springs 13.

material, such as metal or wood or a combination thereof. Standards 5 are provided at one end of the table and are notched in their upper ends to receive the end portions oi' a bar 6, upon which the bolt or roll 7 of wireeloth or like goods is mounted.

A clamp is arranged adjacent to the bolt or roll 7 and comprises upper and lower bars 8 and 9 and cam -levers lO, the latter being' mounted upon pins il, supported in uprights l2, projected upward `from the side pieces 2. The clamp bars or members 8 and 9 may be oi'I any suitable material, metal being pre 'erred, and having their inner or clamp 'faces provided with yieldingmaterial, such as wood and rubber. One oi' the clamp-bars, as 8, has its lower portion provided with a wooden strip 8, and a covering 9", ol rubber or leather, is carried by the lower bar 9, which also has its upper surface provided with awooden strip 9a. By having the clamp-faces ot' the members 8 and 9 clothed with yieldable material the screen-cloth is prevented from injury and held 'from slipping when the goods or Yfabric is subjected to tension, as in the act oig stretching. Springs 13 are interposed between the clamp members 8 and O to lorce them apart when the cam-levers lO are moved, so as to eiiect a release oi' the goods. The clamp is vertically adjustable as a whole, thereby insuring positive and certain action ot' the cam-levers l0 when thrown downward at their Ytree ends, so as to advance the har 8 toward the bar O when it is required to grip the goods. For adjustiliig the clamp set-screws 14C are provided and are threaded into brackets i5, extended inward from the side pieces 2. The end portions oi' the set-screws are reduced or provided with pins 16, which pass through the clamp member 9 and enter the clamp member 8 and upon which A washer 1T is mounted upon the shoulder at the base ol the reduced portion 1b' and sustains the end thrust of the set-screw.

A. plate i8 is arranged beneath the bed or top l and is mounted `i'or longitudinal movement in cross-peces 1.9.

The `front end of the plate 18 is widened, as shown at 20, and upturned, as shown at 21, to forma shoulder or stop for engagement with the frame 22, upon which the screen-cloth 23 is to be secured. The part 18 constitutes a tension device, as it is the means for moving' the frame 22 when it is required to stretch the wire-cloth thereon. An operating-lever 24 is arranged beneath the bed or top 1 and extends transversely of the machine and is pivoted thereto at a point between its ends and is loosely connected to the tension device 18. The end portions of the lever 24e project beyond opposite sides of the machine, thereby enabling' the operator to actuate the same from either side of the machine, as may be most convenient. A dog 9.5 is pivoted to a side of the machine and is provided with a plurality of teeth, any one of which is adapted to engage with the adjacent end of the lever 24 and hold the same in the required position. To admit of disengaging the dog Q5 when the operator is upon the opposite side of the machine, a rod 26 extends transversely of the machine and is journaled thereto and is provided at one end with an arm 29 to engage with the tailpiece of the dog 25 and at its opposite end with an operating-arm QT, which is normally supported by a pin S28, so as to hold the arm Q9 away from the part 25. In the event of the operator being' upon the side of the machine oppositel to that provided with the dog i5 and it is required to release the latter from the operating-lever 24e the arm 27 is moved, thereby rocking the rod 26 and correspondingly'moving the arm 29, which is brought in contact with the tailpiece of the dog Q5 and frees the latter from the operating-lever, as will be readily comprehended.

In the operation of the machine a bolt or roll of wire-cloth is slipped upon the bar 6 and the latter mounted in the standards The frame 22 to be covered is placed upon the bed or table, and a portion of the wireclotli sufficient to cover the same is drawn from the roll 7 and is tacked or otherwise secured to the end of the frame remote from the roll 7, care being taken to pass the wirecloth 23 between the members 8 and 9 of the clamp. The levers 10 are now operated so as to grip the wire-cloth at a point between the frame 2Q and roll T, after which the lever Q4 is operated so as to move the bar 18, and its projecting' portion 21 coming in contact with the end of the frame 22 adjacent to the clamp moves said frame away from the clamp, thereby placing the wire-cloth under tension, the operating-lever being held in the required position by engagement of the dog 25 therewith. The wire-cloth is now secured to the frame 22 in the usual or any determinate way, after which the operating-lever 24 is released and the wire-cloth cut close to the frame, when the machine is in position for a repetition of the operation, the tension device being' returned to a normal position and the clamp loosened, so as to release the wirecloth to admit of `it being drawn freely from the roll preliminary to being attached to the next frame to be covered.

Having thus described the invention, what is claimed as new is--- 1. In a machine of the character described, the combination of a support for the frame to be covered, a clamp for holding the goods, a tension device, an operating-lever for actuating the tension device, a dog for holding the operating-lever in the required position, and means for effecting release of the dog and operable from the side of the machine opposite that provided with the dog, substantially as set forth.

2. In a machine of the character described, the combination of a stand, a clamp for holding the goods, a tension device for moving the fra-me to which the goods is to be applied, said tension device consisting of a longitudinally-movable bar having a projecting stop to come in contact with the work, an operating-lever for moving said bar, and means for holding the operating-lever in the adjusted position, substantially as set forth.

3. In a machine of the character described, the combination of a stand, means for supporting a roll of goods, a tension device for the work, and a clamp, the same comprising complemental members and cooperating camlevers, substantially as set forth.

4. In a machine of the character described, the combination of a stand, means for supporting a roll of goods, a tension device for the work, a clamp for holding the goods, and means for adjusting the clamp with reference to the clamp-operating means, substantially as set forth.

5. In a machine of the character described, the combination of a stand, means for supporting a roll of goods, a tension device for the work, a clamp for holding the goods, setscrews for adjusting the clamp with reference to the clamp-operating means and having reduced portions extended across the space formed between the clamp members, and springs mounted upon said reduced portions to effect separation of the clamp members, substantially as set forth.

6. The herein-described machine for the purposes set forth, the same comprising a stand, means at one end of the stand for supporting a roll of goods, a clamp adjacent to the goods-suj'iporting means for holding the goods, means for adjusting' said clamp, a tension device comprising a longitudinally-movable bar having a projecting stop for engagement with the work, an operating-lever for said bar having,l its end portions projected be- IOO IOC

IIO

.Vond opposite Sides ofthe stand, t dog' at one In testimony whereof we eijx our signatures side of the Inachlne for engagement with the in presence of two Witnesses.

operating-lever to hold itin an adjusted posi- WILLIAM Ai HOFFMAN. [L. SQ]

tion, and means for releasing' said dog and zir- GEORGE GOSGH. i1.. s.] 5 ranged to be operated frein the side of the Witnesses:

machine opposite to that provided with said JACOB Gosoin,

dog, Substantially as set forth. WILL E. TYLANDER.