US1832765A

US1832765A - Curtain stretcher

Info

Publication number: US1832765A
Application number: US386317A
Authority: US
Inventors: Jr William J Carter
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-08-16
Filing date: 1929-08-16
Publication date: 1931-11-17
Anticipated expiration: 1948-11-17

Description

NOV. 17, 1931. W J., CARTER, JR 1,832,765

CURTAIN STRETCHER Filed Aug. 16, 1929 2 Sheets-.Sheet l NOV. 17, 1931. w, 1 CARTER, JR 1,832,765

CURTAIN STRETCHER Filed Ag. le, 1929` 2 sneets-snee1 2 A I l Il .9 5J 54 14 I5 Il (Il 51-/ lsf l L Fig: 5

ai/l5 gwuento/o W J Carien/ Patented Nov. 17, 1931 PATENT OFFICE WILLIAM J'. CARTER, JR., 0F AKRON, OI-IIO CURTAIN STRETCIVIER Application led. August 16, 1929.V Serial No. 386,317.

This invention relates to frames for hold.- ing curtains and other sheet material in stretched condition and vit has among its objects to provide simplev and inexpensive means of an improved character for holding the pin rails securely in squared relation, for readily adjusting the frame as to height and breadth, for bracing the 'transverse rails and for supporting the frame in an upright position,

vOf the accompanying drawings, Fig. 1 is a front elevation, partly broken away, showing a stretcher frame embodying my improvements.

Fig. 2 is a side elevation oi the lower portion, partly in section on the line 22 of Fig. 1. i y

F ig.'3 is a horizontal section on the line 3 3 of Fig. 2. v

Fig. 4 is a perspective view of one of the brackets for connecting the lower transverse rail with the side rails,

Fig. 5 is an enlarged front elevation, partly broken away, of one of the upper corners and upper middle portion of the frame.

Fig. 6 is an edge view taken from the plane 6 6 of Fig. 5.

Fig. 7 is a perspective view of one of the top corner brackets.

Fig. 8 is a perspective view showing one of the top rails and the brace bar together with the bracket connectingvthem.

Fig 9 is a section on the line 9 9 of Fig. 5.

The stretcher frame includes a pair of upright side rails or

pin bars

10, 10 and upper and lower transverse or horizontal pin bars or

rails

11, 12, leach of Which'is provided with a row of pointedpins 13 for impaling the edges of the curtain or other article to be stretched and dried on the frame', these pins being inclined slightly outward as indicated in Fig. 2 and being mounted on a pin ledge 14 formed on each ofthe bars. The wood for all of these rails is made of uniform section so as to be usable in either the side or the transverse rails and each one has a rectangular clamping rib 15 located on the front side at its outeredge for purposes hereinafter referred to. v

'The lowerend of each siderail 10 is provided with a supporting foot 16' in the form of a rectangular wooden block, vertically grooved at 17 on one face to receive the Wider edge of the rail 10, and detachably secured thereto by means vof a horizontal clamping bolt 18 whose stem passes through a hole bored in the foot block and is provided with a right-angled clamping jaw 19 at one end, taking over the inner face of the rib 15 and screw-threaded at its opposite end to receive a wing' nut 20 which bears on a washer 21 on the outer face of the foot block. Thereby I provide a detachable support of great simplicity and effectiveness for maintaining the frame in an upright position.

The upper transverse rail 11 is or may be fastened at a-fixed height over the top eX- tremities of the side rails 10 but transversely slidable with reference thereto for changing the width of the frame, while the lower transverse rail 12 is slidable both vertically and transversely and the adjustment for heightis performed solely by moving said rail 12 up or down on the side rails. This provides a stiffer construction 'than when bh horizontal rails are vertically adjusta e.

At the lower corners I connect the lower transverse rail 12 with the side rails 10 by a simple form of bracket 22, which maybe stamped and bent to shape out of a single pieceof sheet metal, said bracket having diagonal oblique jaws23, 24 connected by a cross member 25 andadapted to be clamped against the

rails

12 and 10 respectively by means of a carriage bolt 26 passing through a squared hole 27 inthe jaw 24 and a round hole 28 in the jaw 23 and having a wing nut 29 which bears against the front jaw 23as indicated in Fig. 2. The front jaw 23 is eX- tended horizontally in a channel member 30 having' a front plate and top and

bottom flanges

31, 32 to embrace the clamping rib 15 of bar 12 on three sides. Thus the rail 12 is horizontally adjustable through the chan- `the'side rail 10 and clamped in both adjustments by the bolt 26 which passes under the transverse rail 12 and on the outer side of the side rail 10.

For fastening the top rail 11 over the upper extremities of the side rails 10, I provide the corner brackets 33 shown in Figs. 1, 5, 6 and 7 and consisting` of a unitary bracket body adapted to be stamped and bent to shape out of a single piece of sheet metal, said bracket including a lower channel portion 34 having a rear web and two

side flanges

35, 36 respectively of greater and less width for engaging the outside wider edge and the inside narrower edge of the side rail 10; and an upper transverse channeled portion 37 for slidably embracing the top rail 11, the channel being formed by the back web, the upper edges of the

flanges

35, 36 an-d an overhanging horizontal flange 38 for engaging the top edge of the rail 11. The bracket 33 is iiXedly attached to the upper end of rail 10 by means of a bolt 39 passing through a hole in the rail and through a hole 40 in the web ol the bracket. For adjustably clamping the bracket 33 to the top rail 11, I provide a` vertical bolt 41 passing through holes 42 in the flange 3S and 43 in a U-shaped boss member riveted to said flange adjacent its front edge, the stem of said bolt having a clamping jaw 45 at its lower end taking under the lower edge of the clamping rib 15 on the rail 11 and having on its upper end a wing nut 145 which bears against a nut rest formed b v the middle upper portion of boss member 44. This construction provides an exceptionally rigid coi'- ner connection by reason of the overlying relation of the rail 11 to the end face of the rail 10 and the described channel construction ofthe bracket, said connection however being of a` simple and inexpensive character and permitting transverse adjustmentfor width.

Each of the

transverse rails

11 and 12 is -made in a plurality of aligned sections 11,

12"', two or more in number, accordingl to the desired width of the frame for curtains of the maximum length to be handled thereby. The ends of the sections of each rail are connected by a splicing bracket 46 made of a single piece of sheet metal bent to form vertical and horizontal flanges 47, 48 to embrace the rail 11 on the rear and top sides thereof. By omitting a lower horizontal flange on said bracket, I avoid the effects of changes in width of the rails 11 caused by a greater or less degree of dryness of the wood. Bracket 46 is secured to the rail sections 11 or 12L by means of diagonal bolts 49 passing through holes in the rail and bracket and provided with Wing nuts 50 at their upper ends abutting against nut rests at the corner line between the danges 47 and 4S. This provides a splice of ample rigidity. especially when used in connection with corner joints of the character described between the

rails

10 and 11, including brackets such as 33.

I further provide an intermediate brace bar 51 connecting the top and

bottom pin rails

11 and 12 at the joints between the sections of said rails and fasten this brace bar to the brackets 46 in a vertically slidable manner by means of a rectangular clamping member 52 riveted at 522L at the back oi each bracket 46 and provided with a clamping bolt 53 whose stem is in non-turning relation to one of the jaws of member 52. To counteract rocking motion of brace bar 51 with reference to the bracket 46 I provide rearwardly-extending ears 54 struck out of the lnetal of the flange 47 and embracing the sides of the brace bar between them as indicated in Figs. 5 and 8.

From the aboveI description the inode of construction and adjustment of my improved stretcher fra-ine will be evident7 the top rail 11 being fixedly held as to vertical movement on the side rails 10 in a rigid squared relation thereto. Adjustments for height are performed by looseningl the brackets and sliding the bottom rail 12 up or down while adjustments for width are performed by loosening said brackets 22 and the clamping bolts 41 of the upper brackets and reclamping the brackets at the new adjustments. The frame may be readily taken apart and packed in a small compass for shipment or storage.

It will be understood that the above described embodimentmay be variously modified within the scope of my invention as defined in the claims.

I claim:

1. A stretcher frame including a. side pin rail having a clamping rib and a pin ledge therealong projecting inwardly therefrom, and a supporting foot block having a bolt provided with a jaw in clamping engagement with said rib and detachably securing the foot block in position on the side pin rail.

2. A stretcher frame including a side pin `ail having a clamping tace, and a supporting foot block grooved to receive an edge of said rail opposite said clamping face.l and said block provided with a bolt extending therethrough and across said rail, said bolt having a clamping jaw engaging said clamping face.

3. A stretcher frame including a side pin rail having a forwardly-projecting clamping rib forming part of its wider edge and an inner pin rail forming part of its narrower edge, a supporting foot block grooved to receive the wider edge of said rail, and a bolt passing through said block and having av clamping jaw taking over the inner face of said rib.

4. A stretcher frame including side and transverse pin rails relatively adjustable to vary the height and width of the frame and 'formed with forwardly-projecting clamping ribs and inner pin ledges, a corner bracket slidingly embracing the side- 'ail clamping rib, said bracket having a channel slidingly cluding a pair ofjaws and a clamping bolt j which passes across the side. rail on the outer side thereof.

5. A stretcher-frame corner bracket comprising a front web forming a front clamping jaw and provided with an oblique extension having channel flanges, and a rear jaw connected with said front jaw by a cross member, said jaws being formed with bolt holes. i

6. A stretcher frame including a side pin rail, a transverse pin rail overlying the upper end of said side rail, and a channeled corner bracket embracing and lixedly secured to said side rail and having means secured thereon and carried thereby for clamping said transverseA rail at different width adjustments, said side pin rail movable as a unit with said corner bracket and clamping means secured thereto along said transverse rail.

7. A stretcher frame including a side pin rail, a transverse pin rail overlying its upper end and substantially in the plane of said side pin rail and having an upper clamping rib and a pin ledge below said rib, and a corner bracket having a lower channeled portion embracing and bolted through the side rail and an upper clamping portion provided with a front clamping bolt having a jaw engaging the under side of said clamping rib. l

8. A top corner bracket for stretcher frames comprising a unitary bracket body formed with a lower, three-sided, longitudinal rail channel open in front and having a bolt hole in its rear wall, and a transverse rail channel surmounting said longitudinal channel and including an upper flange provided with a clamping-bolt guide and nut rest.

9. A stretcher frame comprising a pair of side pin rails, a transverse pin rail including two aligned sections, a splicing Vbracket connecting said sections and having flanges located at the back and upper sides thereof, and bolts extending diagonally through said sections and brackets and having nuts at the corner line of said anges.

l0. A combined splicing and brace bracket for stretcher frames, said bracket having angularly-related flanges for engaging the rear and edge faces of aligned pin-rail sections and being formed with bolt-receiving holes, and a brace-bar receiving and clamping member projecting rearwardly from the rear flange, said clamping member comprising spaced jaws and a clamping bolt extending between and connecting the jaws adjacent the outer ends thereof.

11. A combined splicing and brace bracket for stretcher frames, said bracket having angularly related rear and edge flanges, a rearwardly-projecting brace-bar clamping member riveted to said rear flange, and barreceiving ears formed on the rear iange inA line with said member.

12. A stretched frame corner bracket embodying a U-shape clamp member' comprising' spaced jaws connected at one end by a cross member, a clamping bolt extending between and transversely through said jaws adjacent said cross member, and one of said jaws provided at its free end with an oblique extension having inwardly extended channel forming flanges.

13. A top corner bracket for stretcher frames comprising a bracket body formed with a lower longitudinal frame rail receiving channel, a transverse rail channel above said longitudinal channel including an upper flange provided with a clamping bolt guide, and a clamping bolt mounted insaid guide disposed longitudinally of said longitudinal channel and terminating in a frame rail engaging jaw.

14. A stretcher frame comprising a pair of side pin rails and upper and lower transverse pin rails connected in squared relation,

the upper rail being fastened over the top extremities and in substantially the plane of the side rails, the lower rail being adjustable up and down on the side rails, corner brackets engaging the joined transverse and side rails,

respectively, clamping means carried by each bracket to releasably engage and secure the adjacent rails together, the side rails being freely movable and adjustable toward and from each other on the transverse rails, and said corner brackets and clamping means in released position remaining in normal rail engaging positions during adjusting Inovements of both the side and transverse rails.

In witness whereof1 I have hereunto set my hand this 15th day of August, 1929.

WILLIAM J. CARTER, JR.

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