US2133199A

US2133199A - Fabric clamping means

Info

Publication number: US2133199A
Application number: US97084A
Authority: US
Inventors: Fred W Kammerer
Original assignee: Individual
Current assignee: Individual
Priority date: 1936-08-20
Filing date: 1936-08-20
Publication date: 1938-10-11
Anticipated expiration: 1955-10-11

Description

F. w. KAMMERER FABRIC CLAMPING MEANS Oct. 11, 1938.

Filed Aug. 20, 1936 l uAAAAAAAIAFAAQAQ WWW 4 W W g Fm i w 1 f 2 Patented Oct. 11, 1938 UNITED STATES PATENT OFFICE 16 Claims.

This invention relates to a clamping means for securing sheet material, or the like, in place. The invention is shown and described herein as adapted for use in combination with the edge of a door, such as a swinging door, to hold a novel form of cushion in place thereon. It must be understood that the device of the invention is not confined to use in such an environment, since it may be used wherever it is desired to securely fasten in place the marginal portion of a sheet or web of material, such as cloth, rubber, paper, sheet metal, or the equivalent.

It is an object of the invention to provide a clamping device comprising two elongated strips or plates, having interengaging' portions adapted, in use, to prevent transverse separation of the parts, and having clamping jaws spaced there from adapted to grip the material to be clamped.

Other and further objects and advantages of the invention will become apparent as the description of the two embodiments of the invention shown in the accompanyingdrawingproceeds.

Referring to the drawing, the invention is shown in combination with the edge-of a swinging door, as a part of anovel edge cushion construction, but, as stated above, the clamping means of the invention is not confined to "such use.

In the drawing:

Figure'l is an elevation of a swinging door having the device of the invention applied thereto.

Figure 2 is a horizontal sectional viewtaken on line 2-2 of Figure 4.

Figure 3 is a fragmentary elevational view of the clamping means shown in Figures 1 and 2, with certain parts broken away to showthe internal construction.

Figure 4 is a vertical sectional view taken on line 44 of Figure 3.

V Figure 5 is a horizontal sectional view, similar to Figure 2, showing 'a slight modification, and

Figure 6 is a similar view showing a further modification.

As stated above, the clamping means of the present invention is usefulfor securing a cushion I0 to the edge of a swinging door I I'. The cushion preferably comprises a body of compressible material l2 secured along the edge face l3 of the swinging door. The compressible material preferably consists of sponge rubber, although any equivalent material may be used; Stretched over the compressible material is a flexible membrane I4 of any suitable sheet material, such as rubber, rubberized cloth, or the like. In practice," I prefer to use a laminated fabric consisting of an inner'textile layer and'an outer'rubber coating. The marginal portions l 5, I 6 of the sheet material are securely held in the clamping means of the present invention, as'will now be described.

Along the outer and inner faces of the swinging door, adjacent the free edge, there is secured an inner plate or strip [1, either in a rabbeted portion H or upon theface l8 of'the'doon'as shown in Figures 2 and 5 respectively. The inner plate or' strip may conveniently be made of commercial bronze, by'the well known extrusion method. The strip comprises a flat intermediate portion l9 and a gripping jaw or serrated edge 20. The opposite edge has a pair of upstandingj'ribs 2|, 22 formed thereon, forming therebetween, a groove 23. The net body portion of the strip has a row of elongated apertures 24 formed therein, for purposes to be'described, and, further, an additional rowof apertures 25; The inner plate I! is secured in the rabbeted portion, or to the outer face of the door by wood screwsZfi, or the like, extending through the apertures 25.

Each clamping device further comprises an outer clamping plate or strip 30 having a pair of longitudinally extending ribs 3|, 32 formed adjacent one margin, and a down-turned jaw or clamping edge 33 at its other margin. The ribs 32 are complemental to and mate with the ribs 2|, 22 and groove 23. The parts are thus positioned in cooperative relation, and transverse relative movement between the plates is restrained.

The outer clamping plate 3|] is provided with apertures 33, spaced apart a distance equal to the spacing of the elongated apertures in the inner plate.

When assembling the parts shown in the combinations illustrated in Figures 2 to 5, the inner plates 1 are securedto the door ll 'by'wood screws 26 extending through the apertures 25. The cushionl2 is'put inpmc'e and the covering I4 is stretched tightly thereover andinitially or temporarily securedinplace by tacks 35 driven through'the sheet material into the material of the door at one end of each of the elongated openings 24, as shown in Figure 3. The outer plates 30 are then put in place wlth'the inwardly projecting ribs in mating relation tothe ribs and grooves on the inner platesgand with the apertures 33 aligned with the apertures 24, at points spaced from the positions of the'tacks 35. Wood screws 36 are then screwed home to tightly draw the outer plates down upon the inner plates; with lib? clamping jaws 'firmly engaging the fabric covering and masking the initial securing tacks 35. The edges of the

jaws

33, 20 are preferably serrated to have a firm grip upon the fabric. The fact that the two clamping strips engage one another at their rear edges and are spaced apart throughout a substantial portion of their widths, and grip the fabric at their other edges, is of considerable importance, since this construction facilitates a firm grip on the fabric. In the modification disclosed in Figure 6, the inner member 40 is provided with outwardly projecting ribs 4|, 42 which converge toward each other at their outer ends to form therebetween a re-entrant groove 44. At the opposite edge, the inner plate 40 is provided with a flange 45 having its inner surface serrated as at 46, to grip the covering material l4. The outer clamping strip 41 comprises an inwardly projecting rib 48 joined to the body of the strip by a restricted neck, so that when the rib is inserted in the re-entrant groove by endwise movement, the parts may pivot relative to one another, but may not be taken apart by transverse movement. The outer plate 41 at its edge adjacent the flange 45 is provided with an enlargement or head 49 having a serratedouter face 50 adapted to cooperate with the serrations on the flange 45 to clamp the material therebetween. 7

The opposite edge of the plate 41 is provided with a down-turned flange 5l,' to conceal the pivotal joint between the plates and to make a finished job. In other respects, the form of the invention shown in Figure6 corresponds to that shown in Figures 2 to 5 inclusive.

Although the foregoing description has referred to certain details of construction of the devices shown in the drawing with considerable particularity, it must be understood that the invention is not limited to these details, but covers all sim ilar devices coming within the scope of the accompanying claims, or their equivalents.

I claim:

1. Means for clamping a membrane in place upon a base, comprising a pair of' elongated rigid metal plates, one of said plates having a rib on the surface thereof facing the other plate, and the other plate being provided with a groove facing said rib and being adapted to receive and mate with the same, said plates having cooperating gripping surfaces along their adjacent margins, spaced from said rib and groove, and means independent of said rib and groove and of said gripping surfaces and extending through said plates for drawing said plates together to clamp a membrane between said gripping surfaces, said rib and groove serving to prevent relative lateral movement of the plates independently of said means for drawing the plates together.

2. Means for securely clamping a membrane in place, comprising a rigid extruded metal plate having a serrated marginal portion and a grooved portion spaced therefrom, a second rigid extruded metal plate having a rib receivable in the groove of the first mentioned plate and a serrated portion adapted to be positioned opposite the serrated portion of the first mentioned plate, and fastening means independent of said ribs and grooves for drawing said plates together to clamp a membrane between said serratedportions.

3. Means for securely'clamping a membrane comprising an elongated rigid metallic plate having a pair of upstanding longitudinal ribs forming therebetween a groove, 2. second rigid metallic plate having a ribadapted to be received in said groove, whereby transverse relative movement of said plates is restrained, and screw threaded means spaced from said ribs and grooves for drawing said plates together to clamp the membrane therebetween at a point remote from said ribs and grooves.

4. Means for securely clamping a membrane in place comprising an elongated rigid plate provided with a pair of ribs adjacent its rear edge forming therebetween a groove, and, adjacent its forward edge, a serrated gripping portion, and a second rigid plate provided adjacent its rear edge with a pair of ribs adapted to mate with the ribs and groove of the first mentioned plate, said second mentioned plate adjacent its forward edge being provided with a down-turned marginal portion having serrations formed thereon facing the serrations on the first mentioned plate, and means spaced from said ribs and grooves for drawing said plates together to clamp a membrane between said serrated gripping portions.

5. Means for clamping the edge of a piece of sheet material to a member, comprising a pair of non-flexible elongated metal strips adapted to be secured to said member, said strips having longitudinally formed interengaging elements cooperating to prevent transverse relative movement of the strips, and, spaced therefrom, cooperating gripping surfaces adapted to engage the sheet material placed between the plates when the plates are drawn together, and fastening means extending through said plates into said member for positively drawing the plates together 6. A device in accordance with claim 5 characterized in that one of said plates is provided with apertures to receive fastening elements extending from said plate into said member, and with additionalapertures to receive fastening elements extending from the other plate through the first mentioned plate into said member, whereby the plates may be drawn together by the second mentioned fastening elements.-

'7. Means in accordance with claim 5 characterized in that one of said plates is provided with elongated apertures adapted to receive initial fastening means extending through the sheet material and into said member, and other fastening means extending through the other plate,

and said sheet material, and into said member. 1

8. Means .for clamping the edge of a piece of sheet material to a member, comprising an elongated non-flexible metallic strip adapted to be secured to said member, a complemental elongated rigid clamping strip, and means for drawing the two together to clamp the sheet material therebetween, said first mentioned strip comprising an upstanding longitudinal rib adjacent one edge and a gripping surface adjacent the other edge, said complemental strip comprising a pair of ribs adjacent one edge adapted to mate with the rib on said first mentioned strip and a down-turned opposite edge forming a jaw and having a gripping surface thereon, the major portion of said strips being spaced apart between the mating ribs and the gripping surfaces, whereby the strips are in mutual engagement along one zone and are in gripping relation to the material along another zone spaced therefrom, said means for drawing the strips together comprising fastening means positioned between the mating ribs and grooves and the gripping surfaces and extending into said memher.

9. Means for clamping the edge of a fabric membrane to a member comprising a pair of rigid extruded metal clamping strips adapted to be secured to said member, said strips being hinged to each other on an elongated pivotal axis, gripping means on said strips spaced from said axis, and means for drawing said plates together to bring said gripping means into cooperative relation to the fabric by pivoting movement of one of said strips about said axis.

10. Means for clamping the edge of a piece of sheet material comprising a lower plate of eX- truded metallic section adapted to be secured to a member, an upper plate of extruded metallic section pivoted to the lower plate and adapted to cooperate therewith to clamp the material therebetween, said pivotal connection comprising a re-entrant groove on one of said plates and an outwardly flaring solid rib on the other plate positioned in said groove, and means spaced laterally from the pivotal connection for drawing the plates together to clamp the material therebetween.

11. Means for clamping the edge of a piece of sheet material, comprising a pair of elongated strips of extruded metallic sections having their body portions disposed in substantially parallel planes, said strips having integral elongated projections comprising a loose dove-tail joint interconnecting the strips for relative pivotal movement, and further having, spaced from said joint, gripping surfaces disposed substantially at right angles to the planes of the body portions, and means spaced from the dove-tail joint for drawing the plates together to clamp the material therebetween.

12. A construction in accordance with claim 9 characterized in that the hinge connection between said plates comprises a loose dove-tail joint, whereby the plates may be assembled and separated only by relative longitudinal movement.

13. A cushion construction for the edge face of a swinging door comprising a body of cushioning material disposed along said face, a sheet fabric covering extending over said material and drawn back toward the corners of said face, and clamping means for the edges of said covering comprising separate inner and outer rigid extruded metal plates adjacent each side face of the door having clamping surfaces and interengaging elements spaced therefrom to restrain relative transverse movement of the plates, and means for drawing the outer plate toward the inner plate to clamp the fabric between said clamping surfaces.

14. A cushion construction for the edge face of a swinging door comprising a body of cushioning material disposed along said face, a sheet fabric covering extending over said material and drawn back toward the corners of said face, and clamping means for the edges of said covering comprising separate inner and outer rigid extruded metal plates adjacent each side face of the door having clamping surfaces and interengaging elements spaced therefrom to restrain relative transverse movement of the plates, temporary fastening means for securing the covering in place over the inner plate before the outer plate is applied, and means for thereafter drawing the outer plate toward the inner plate to clamp the fabric permanently between said clamping surfaces.

15; A cushion construction for the edge face of a swinging door comprising a body of cushioning material disposed along said face, a sheet fabric covering extending over said material and drawn back toward the corners of said face, and clamping means for the edges of said covering comprising a pair of rigid extruded metal plates on the side faces of the door having clamping surfaces and interengaging elements spaced therefrom to restrain relative transverse movement of the plates, the plate adjacent the side face of the door having openings therein, tacks extending through the covering and through certain of said openings into the door to constitute initial fastening means for the covering, and screws ex,- tending through the other plate, said cover, and certain of said openings in the first mentioned plate to draw the plates together, whereby said clamping surfaces constitute permanent fastening means for said covering.

16. A cushion construction for the edge face of a swinging door comprising a body of cushioning material disposed along said face, a sheet fabric covering extending over said material and drawn back toward the corners of said face, and clamping means for the edges of said covering comprising inner and outer rigid extruded metal plates adjacent the side faces of the door having clamping surfaces and interengaging elements spaced therefrom to restrain relative transverse movement of the plates, the inner plate having a series of elongated apertures therein, and another series of apertures, .screws extending through the last mentioned series to secure the inner plate to the door, tacks extending through the covering and through said elongated apertures and into the door to constitute initial fastening means for the covering, and screws extending through the outer plate, said covering and said elongated apertures into the door to clamp the outer plate in place, whereby said clamping surfaces constitute permanent fastening means for said covering.

FRED W. KAMMERER.