US2216880A - Screen wire stretching device - Google Patents

Description

Oct. 8, 1940. F F YD 2,216,880

SCREEN WIRE STRETCHING DEVICE Filed Sept. 11, 1939 J fli izy i. 6

a if /2 2 e ,fivvenfon FRANK B. FLOYD 6 V I .\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\Y iii Patented Oct. 8, 1940 new p 2,216,886 y H SCREEN WIRE STRETCHING DEVICE I5Claims. This in'ilention relatesto a' device forstretching screen wire on frames such' as, for window s'creens,-transoms andscreen doors.

The application of woven wire screen to frames, such as-door andwindow frames, by hand is both slow and tedious and for a first class job requires a 'high de'gree" of skill. The resultof this isthat much time and material is wasted by persons who attempt to performthis task with out thenecessary training.

1Thisinventi'on,briefiy described, comprises a clamp formed from two parallel blocks which are 1 interconnected at their ends by means of eyebolts andfwhichjean be secured to'the edge of a bench s st ms. The lower block hasthreaded openings lfor thereception of wooden screws whose ends "are rotatably connected with a transverse bar.

Having thus briefly described the invention, the same ,will now be described in detail, and for this purposereference will be had to the accompanying drawing, in which:

Figure l is a perspective View showing the stretching device in operative position;

Figure 2 is a top plan view of the stretching device and the table on'which it is supported;

Figure 3 is a side elevation of the part shown in 'FigureZ; and I Figure 4 is a fragmentary end elevation partly in section showing the manner in which the blocks are interconnected.

In the drawing reference numeral 8 designates V a table or bench on which the work is supported and reference numerals 9 designate cleats on which the frame I rests. The frame, which has been designated by reference numeral 10, may be a window or a door frame and has been shown more or less diagrammatically.

The screen is tacked to the frame along the end member positioned to the left in Figure 1 and the screen or other'material thus attached to the frame is extended through the space [2 between the clamps comprising blocks 2 and 3. It will be seen that both of these blocks are provided at their ends with inwardly extending slots for the reception of eyebolts 5 that are provided with butterfly nuts 6. are pivotally connected to the block 2 by means of pins H in such a way that they can be swung outwardly in the manner shown in Figure 4 where a portion of the blocks have been shown in sec.

shown by dotted lines.

dots.

The eyes of these bolts full lines whilegthebperative position has been The lowergor block 2, is provided neareach end with a threaded opening. for the reception of a woodenscrewil. "These screws are of the type generally employed in connection with carpenter clamps and sense purchased ready made. In the present embodiment, the clamp comprising blocks 2 and 3 have been shown as attached to the edge of the t'ableor benfchby means offaplate 1 and screws fwhiclihave been indicated ,by'round As faras this invention is concerned, it is immaterial whether the clamp is attached to the table or support, but in actual practice, where a large number of frames are to be provided with screen, it is usual to'thus secure the clamps. in place. The ends" of the screws l engages. rec tangular bar 4 against which one endof frame H) abuts. The screen, which has notbeen shown, is fastened at one end to the frame as above described, and extendsbetween the two blocks 2 and 3. The nuts 6 are turned down so as to clamp the screen firmly in place.

After the screen has- ;Lu'NrrED si-Arts PAT-mem s f.

been secured to the frame and to the clamp,

screws lare rotated so as to move the bar 4 towardsthe left when viewed as in the drawing, whereupon the point of attachment of the screen to the frame is moved towards the left, thereby tensioning the screen. By relative adjustment of the screws I, the material can be stretched uniformly and will be entirely free from wrinkles which nearly always occur when a. screen is applied manually. After the screen has been stretched to the amount desired, the edges are secured to the frame by means of tacks, after which the screws are loosened and the screen out along the end of the frame nearest to the clamps. Another frame can now be put in place and a screen applied thereto in the manner above described.

The bar 4 is provided with openings for the reception of the ends of screws l in the manner shown in Figure 2 and therefore comprises a part of the stretching device which forms the subject of this invention.

It is obvious that the table 8 and the blocks 9 form no part of this invention. Plate 1 is useful whether or not it is employedfor the purpose of attaching the stretching device to the table or bench as it does assist the worker in properly positioning the several parts.

From the above description it will be apparent that by means of. the simple clamp shown on the drawing and described herein, the application. of wire screens to door and window frames can be greatly facilitated and that a workmanlike job can be performed by anyone, regardless of whether or not he is skilled in this particular art.

Having described the invention what is claimed as new is:

1. A stretching device comprising a clamp formed from. two parallel, substantially rigid jaw members arranged in superposed relation, means for securing the members in clamping relation, said means comprising an element hingedly attached to the lower member and projecting above the top'of the'upper member, a pressure exerting member threadedly connected-with the hinged se-, curing element for engaging the upper clamping member, the lower clamping member having a threaded opening adjacent each end, the axes of the openings being parallel with the clamping surfaces, and a screw operatively associated with each opening.

2. A stretching device, comprising in combination, two parallel, substantially rigid jaw members arranged in superposed relation, the ends of the members having registering slots, an eyebolt having, its eye positioned in each slot in the lower member, a pivot pin extending through the eye and through the member, said eyebolts being swingable into the cooperating slots in the upper member, clamping nuts on the bolts, the lower member having transverse threaded openings adjacent its ends, and screws in said openings, the jaw members serving to clamp a fabric, and the ends of the screws to engage a member to be moved.

3..A fabric stretching device for use in applying a fabric .to a frame, comprising in combination, two parallel, substantially rigid clamping iaw members. arranged in superposed relation,

the ends of both members having registering slots, an eyebolt pivoted in each slot in the lower member and swingable into and out of the corresponding slot in the upper member, the lower member having a transverse threaded opening adjacent each end, a screw operatively associated with each opening, one end of each screw having a handle portion and the other end a cylindrical projection, and a cross bar carried by the screws, the crossbar having openings for the reception of the cylindrical ends.

4. A stretching device in accordance with claim 3 in which the lower jaw member has secured to one side thereof a plate that extends below the lower surface thereof and which serves to engage an edge of a support.

5. A screen stretching device for use in applying wire screen to a frame, in combination, a support, having a fiat upper surface and an edge, a screen clamp comprising two superposed, substantially parallel jaw members, each having its ends provided with a notch, the notches in the two members registering, an eyebolt pivotally secured in each notch of the lower jaw member and swingable into and out of the corresponding notch in the upper member, nuts on the bolts, the lower jaw having a transverse opening adjacent each end, a screw threadedly connected with each opening, one end of each screw having a handle portion for turning the same, the other ends having cylindrical axial projections, a bar connecting the ends of the screws, said bar having openings for the reception of the cylindrical projections, and a stop plate secured to one side of the lower jaw member and projecting below the same for engaging the edge of the support.

FRANK B. FLOYD.

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