US909055A

US909055A - Corner-fastener for frames.

Info

Publication number: US909055A
Application number: US39265707A
Authority: US
Inventors: George W Bowers
Original assignee: ORVILLE T CURTIS
Current assignee: ORVILLE T CURTIS
Priority date: 1907-09-13
Filing date: 1907-09-13
Publication date: 1909-01-05
Anticipated expiration: 1926-01-05

Description

G. w. 130m CORNER FASTEIEB 1'01 mm. APPLIOATIOi FILED IE}! 13 1.01

1 mm Jan. 5, 1909.

: mus-41in: 1.

To all whom it may concern: I Be it known that I, GEORGE W. Bowna's,

' UNITED STATES PATENT OFFICE.

GEORGE wnownns, or SOMERVILLE, MASSACHUSETTS, ASSIGNOR or ONE-.HALFTQ OZRVILLE T. CURTIS, or WOBURN, MASSACHUSETTS.

- coannn-ms'rnnnn non rams.

of Somerville, county of Middlesex, State of Massachusetts, have invented an Improvement inCorner-Fasteners for Frames, of

' which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings curing the comer-fasteners to the frame,

representing like .parts.

At the present time large wooden frames are used in tanneries, patent leather factories and like places for holdi stretching and otherwise treating skins. hese frames are made large enough to support a whole or a half hide. The half hi e size is approximately 11 ft. x 4 ft. 4 The frames, with the skins thereon, are carried from lace to place, are put in hotovens, and are aid out of doors in the sun, and as a result of much handling often get broken at the corners.

This invention has for its object to provide such large unwieldy frames with improved corner -.ocking and strengthening means, whereby they are especially well a' 'a tedto withstand the rough usage to which t v ey are subjected. Also to provide means for sewhich are connected with the bars composing the frame and which act. to draw said bars toward each other, into the corner-fasteners, until the mitered-ends thereof abut. Also to provide means for securing the coma-fasteners to the frame, which is adjustable, to provide fortightening the parts in case of shrinkage of the bars composing the frame.

Figure 1, shows in front elevation one of the corner portions of a frame having corner- 7 locking means embodying this invention.

Fig. 2, is an edge view of the parts shown in Fig. 1. Fig. 3, is a section of the corner-suporting means taken on the dotted line 33, ig. 2. Fig.4 is a detail showing the end of one of the frame-bars. Fig. 5 is a view of the blank which is used in forming the comersupport. Fig.6 is a front view of a complete frameembodying this invention.

The framels 'uadrangular. and consists of several bars 41, mitered at their ends and abutted together to form a miter-j oint. The frame is provided at each corner with a corner-fastener embodying this invention. The corner-fastener herein shown consists of a metallic blank of suitable shape which is struck up and bent to form two frame-engaging portions a, a, disposed at right angles to Specification of Letters Patent.

Application filed September 13,1007. Burialitakflfifi'l.

Patented Jan. 5, I909.

each other, or such other angle as may propt' e erly conform to the shape of'the corner of frame, each portion having a pair of side flanges-b, '1), adapted to overlie the opposite sides of the frame-bars when. the corner-fastener is adjusted thereon, and each portion also having at or near its extremity a air of arms 0, c, and c c which also overlie t e o posite sides of the frame-bars. Gneach si e' of the frame-bars the arms 0, and c extend toward each other, in a diagonal direction with respect to the frame-bars, and said arms are provided at their ends with interlocking portions, which engage each other to lock the two arms together. The interlocking ends on said arms, as herein shown, conslst o tailed projectlons c, 0, formed on the exdovetremities of the arms 0, c, and dovetailed recesses c 0 formed at the extremities of the arms a, c, which are adapted to receive the dovetailed projections on' the arms a, c.- The arms a, c, and c c of. the two frame-'enga ing ortions, when interlocked, are also prei era'by brazed, welded or otherwise secured to insure a rigid connection.

The interlocked arms at opposite sides of the frame-bars, constitute a pair of connecting-bars which connect the frame-engagin portions of the *cornerefastener together an securely hold them in fixed relative positions.

.The metallic blank, when struck u formed into the form of corner-fastener in shown, hasalso a flattened corner (I which for a short distance, and is herein shown as transversely arranged with respect to the bar, but it may be otherwise arranged.

A plate It 's provided at each corner of the frame, which extends from barjto bar, and as herein shown, both ends of said plate are bent at a slight angle with respect to its intermediate ortion to enter the notches i in the bars. ach plate has a hole throu hit, in line with the hole through the mitere corner :of the frame, for the bolt e.

In the triangular space provided between 110 the plate 7:. and the frame-bars a small trianlar block 9 of wood is or may be placed living a hole through it for the bolt e. As the nut on the bolt e is turned up the trianular frame-engaging portion an late h are awn toward each other, and t e frameengaging portion is drawn into firm engagement with the corner of the frame and the frame-engaging bars are moved toward each 10 other until the mitered ends thereof firmly abut together. As the parts are thus drawn together the opposite ends of the plate h slide into the notches in the frame-bars more and more, but said notches are made so deep that the ends of said plate will not quite engage the bottoms thereof when the mitered ends of the frame-bars arefirmly abutted together, so that in case said bars should afterwards shrink, they may be again moved toward each other by further turning up said nut.

The corner-fastener herein shown is therefore adjustable to compensate for shrinkage of the frame-bars.

I do not desire to limit my invention to the employment of a corner-fastener formed of a sheet metal blank, or to any specific shape of blank, as many other forms might be em ployed to embody my invention.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. A corner-fastener for frames, consisting of a metallic blank bent to form two frame- 5 engaging portions disposed at right angles to each other, each havlng a pair of arms rovided with interlocking ends, the arms 0 the two portions extending toward each other and when interlocked forming connecting 0 bars which secure the two portions together,

substantially as described.

2., A corner-support for frames consisting of a metallic blank bent to form two frameengagin portions disposed at right angles to each ot er, each portion having a pair of flanges adapted to overlie the frame, and each portion having a pair of arms rovided with interlocking ends, the arms 0 the two portions extending toward each other and 5 when interlocked forming connecting bars which secure the two portions together at opposite sides of the frame, substantially as described.

3. A frame composed of bars having mitered ends abutted together, each bar having a notch adjacent lts end and also having a groove at the end, a corner fastener for said frame made of a metallic blank bent to form a pair of frame-engaging portions disposed at right angles to each other and havin a flattened corner provided with a hole through it, a plate extending from bar to bar across the corner, the op osite ends of which are arranged to enter ut not to bottom in the notches in the bars and a bolt extending through said comer-fastener, frame and plate, substantially as described.

4. A frame composed of frame-bars having mitered ends, corner fasteners for the frame, and means engaging the comer-fasteners and frame-bars and moving the frame-bars toward each other until their mitered ends abut and which also secures the corner fasteners to the frame, substantially as described.

5. A frame composed of frame-bars having mitered ends, corner-fasteners for the frame, and means slidably engaging said frame-bars at each corner of the frame, and also engaging the corner-fastener thereat, for drawing said frame-bars toward each other into the corner-fastener until their mitered ends firmly abut, substantially as described.

6. A frame composed of frame-bars hav- 5 ing mitered ends, each bar having a notch adjacent its mitered end, corner-fasteners for the frame, a plate extending from bar to bar at each corner of the frame, having bent ends which enter and slide into the 0 notches in said frame-bars, and means for drawing said plate, and corner-fastener together which also draws the frame-bars toward each other into the corner-fastener until their mitered ends firmly abut, substantiall as described.

7. A ame composed of frame-bars having mitered ends, each bar having a groove at its end and a notch in its inner edge near the end, comer-fasteners for the frame, each comprising a pair of frame-engaging portions disposed at right angles to each other and having means connecting the extremities of said ortions together on opposite sides of the ame, a plate extending from bar to bar at each corner of the frame having bent ends which enter and slide into the notches in said bars, and a bolt extendin through the corner-fastener, frame, an plate for drawing the plate and cornerfastener together which also draws the frame-bars toward each other, into the corner-fastener, until their mitered ends firmly abut, substantially as described.

8. A frame composed of frame-bars having mitered ends, each bar having a notch adjacent its mitered end, corner-fasteners for the frame, a plate extending from bar to bar at each corner of the frame, the ends of which enter but do not bottom in the notches in the bars, a triangular block at each corner of the frame, located between the plate and frame-bars, and a bolt at each corner of the frame extending through the corner-fastener, frame, block and plate, substantially as described.

9. A bracket of the class described formed from a single piece of sheet metal and comprising a 'body section bent, at right angles mtermediate the ends and a brace section extending from the body section at an an 1e to its longitudinal plane and bent at rig t angles to the transverse plane of the same. 10. A bracket of the class described formed from a single piece of sheet metal and comprising a body section bent at right angles intermediate the ends, a brace sectlon extending from thebody section at one end at an angle to its longitudinal plane and bent at right angles to the transverse plane of the same, and a lateral projection at the 1 In testimony 'whereof, I have signed my 15 name to this specification, in the presence of two subscribing witnesses.

GEORGE W. BOWERS.

Witnesses:

B. J NoYEs, H. DAVIS.