US2640506A

US2640506A - Harness frame suspending device

Info

Publication number: US2640506A
Application number: US157951A
Authority: US
Inventors: Paul C Consoletti
Original assignee: Draper Corp
Current assignee: Draper Corp
Priority date: 1950-04-25
Filing date: 1950-04-25
Publication date: 1953-06-02
Anticipated expiration: 1970-06-02

Description

June 2, 1953 P. c. coNsoLET-n HARNESS FRAME SUSPENDING DEIICE 2 Sheets-Sheet l Filed April 25, 1950 INVENTOR.

-PA UL C CoA/@OLETT/ A TTORNE Y .nlllllVLF-...E

P. c. coNsoLETTl 2,640,506

HARNESS FRAME SUSPENDING DEVICE 2 Sheets-Sheet 2 June 2, 1953 Filed April 25, 1950 INVENToR. PA UL C. CoA/0L ETT/ AT TORNE Y greater than, but is preferably slightly less than the thickness of the frame rails so that as the parts reciprocate to and fro, there shall never be contact between the links and rails or between any other portion of the suspending -means and the frames. Furthermore, these links have as a part thereof, or may be so integrally formed from plastic materials that the Contact between metals is prevented thereby to give quieter and more satisfactory bearing conditions.

The invention will be described hereinafter in greater detail and by reference to the accompanying figures of drawings wherein:

Fig. 1 is an elevational' view showing a harness frame to which the suspending means hereinafter described in greater detailhas'been applied.

having xed therein a sleeve 36 within which is threaded an eye screw having an eye or loop 31 and a threaded shank 38. It is to be understood that the three parts incidental to this assembly are clamped together by screw means 39 or other interconnecting mechanism, these parts and the `details thereof being more thoroughly described in copending application Serial No. 147,473, led March 3, 1950.

The hook 3l connects through the intermediate link 35 to the eye 31 and it is to be observed that the eye 31 vis parallelly disposed with respect to the length of the frame and, of course, hook 3l then assumes the same attitude since the link to which each is hooked or otherwise connected j makesit no longer essential that they be dis- Fig. 2 is a detail View showing one form of the invention.

Fig. 3 is a section taken at line 3-3, Fig. 2.

' Figs. 4 and 5 are corresponding views showing so much of the mechanism as is necessary, but of a modified form thereof.

Figs. 6 and 7 are similar views showing the invention in slightly modified form and as it is to be applied to a wooden frame rail.

Fig. 8 is a side elevation of a modified form of the invention, the link here being fabricated almost in its entirety from a plastic material.

Fig. 9 is a sectional view taken at line 3 9, Fig. 8.

Fig. 10 is an end elevational view of the link of Figs. 8 and 9.

Now referring to Fig. 1, a harness frame having top and bottom rails and 2| and end stru-

ts

22 and 23 is shown by way of illustration, this frame being formed from metal, although it is to be understood that the invention is equally applicable to other frames of a Wide variety of types and materials. The heddles 24 are slideable on

bars

25 and 26. A suspending means by which the frame is maintained in an appropriate vertical position in the loom is also moved throughout its requisite extent by harness mechanism (not shown since such mechanisms are Well known to `those skilled in the art). These lharness mechanisms are attachable to the frames and impart movement thereto through a series of straps, tapes, cords or other flexible connectors herein indicated by

numerals

21 and 28 at the top, and to the jack stick ends 29 and 30 at the Ibottom of the frame. These tapes will hereinafter be referred to as suspending straps and itis to be understood that that term is employed to include all the various elements which are frequently employed for the purpose.

' The interconnecting ymeans between the suspending straps and the rails 20 and 2l include looped connectors such as hook 3l fixed at the end of tape 2l and a second looped connector 32 more or less permanently, although adjustably and detachably fixed within a clamp 33 which is in turn engageable about a rib 34 or the like `forming a -part of the rail 20.' Between the looped connectors 3| and 32and completing the attaching or suspending means is a link 35, the details of which will be described in greater particular hereafter, it being understood that at each connecting point of which there are at least four for every frame, the mechanism just enumerated is duplicated.

Now referring to Figs. 2 and 3, the parts incidental to onevconnecting means at one suspending strap are shown to a. larger scale than that employedin Fig. 1, .the clamping means 33 attached to' rib' 34 which is preferably bead-ed posed at right angles. The link itself is of a total thickness las is evident in Fig. 3, slightly less than the total thickness of the rail 20 of the frame, or of the clamping members 33 which may preferably be of substantially the same thickness as rail 20, although it should not be thicker. In theory, the link might be of exactly the same thickness as the rail 20, but to provide a factor of safety, its dimension is slightly reduced so that there is no possibility of contact and consequent wear even though the parts or the frames themselves in their movements become slightly offset or would otherwise effect undesired contact if too close dimensions were attempted to be maintained.

Preferably, the link which is generally referred to by numeral 35, is comprised of side plates 4i! and 4l which are interconnected by the

rivets

42 and 43 and preferably, spaced apar-t by

bushings

44 and 45. These bushings may be made from any material which would serve satisfactorily for bearing purposes, but since no lubrication is possible, one of the plastic materials Y easily and -cheaply fabricated and which is adapted to withstand a maximum amount of wear is to be utilized. By way of example. materials that may be employed include vulcanized bre, thermosetting plastics and thermoplastic materials, and selflubricating metal bushings, one of which is sold under the name Oilite VAs herein illustrated the link 35 is fixed within the loo-p 31 of the looped connector-,which is held by the clamping plates 33, although it is to be understood that the opposite may prevail as lwill hereinafter be described by reference to a modification. The hook 3| serves for attaching and detachng the suspending means within a very short period of time and with a minimum of effort.

Now referring to Figs. 4 and 5, a slightly modified form of the invention will .be described. Here the same link 35 is employed, but the looped connector at the rail of the frame or which is connected directly to the frame, as the case may be. is open while the other connector `4l attached to the suspending or connecting strap is closed, or, at least, is so restricted as to prevent any unintended disassembly of the parts, but permits them to be detached fby use of considerable force. In certain cases it is more desirable that the links be connected in this manner so that they tend to hangnaturally from the suspending means above the frame and therefore may be hooked or engaged over the lower looped connectors 46 with slightly less effort. The construction herein illustrated in Figs. 4 and 5 may more preferably be Iused at the top of the frame while that just above described withrespect to Figs. 2 and 3 may be employed at the bottom or lowerrail thereof.

In Figs. 6 and 7 a Wooden frame rail 48 has an eye'screw 49 threaded into it and the link 35 in this case, directly or more permanently at. tached to form a part of the connector 49 so that a hooked member or connector 50 similar to the hook A3l is employed at the suspending strap as in Figs. 2 and 3. It is furthermore evident here that the link 35 is comprised of a pair of side plates,.

rivets, and a single plastic bushing, although two bushings may be employed if desired. In some instances, a shouldered rivet itself o-r a metallic part circumscribed about that rivet and acting to space the side plates cf the link may be used., This rivet or its bushing may be of a self-lubricating metal.

Now referring to Figs. 8, 9 and 10, a Still further modification is evident, this modification being adapted to be molded as a single part and from any plastic material such as those above mentioned, and havngreinforcing rivets, if reinforcement is desired. Here the link comprises a solid integral plastic member which includesV the side plates I and 52 and what may be considered

intermediate bushings

53 and 54, although these bushings are not separate elements as in the form-s of the invention above shown and described. The rivets or other metallic inserts 55 and 56 may be used as reinforcing members thereby to prevent sheering of the bearing or bushing portion of the links if undue strain is experienced.

It is to be observed that the outside diameter of the looped portion of the connectors is, in all instances, greater than 'the total thickness of the frame rails, but since they are disposed parallelly-with respect thereto, there can be no contacts between these looped connecting means which are preferably formed from steel and more particularly, from a stainless steel, and the wooden or metallic rails of lighter alloys, the latter of which are easily Worn or grooved by the harder steel. Accordingly, it is possible to employ heavier gauge stock for the looped connectors and to make the loops or hooks therein of appreciable radius thereby obviating certain difculties in fabrication and any tendency for the parts to fail prematurely due to the fact that they have been bent to too small an arc.

The term suspending strap is used to designate any and all straps, tapes or cords utilizable for the purpose, while the looped connectors include all hooks, eye bolts, eye screws and similar means which serve the same general purpose.

While one preferred embodiment and a number of modifications of the invention have been disclosed, it is to be understood that the inventive concept may be carried out in a number of ways. The invention is, therefore. not to be limited to the precise details described, but is intended to embrace all variations and modifications thereof falling within the spirit of the invention and the scope of the claims.

I claim:

1. A suspending means for a loom harness frame having top and bottom rails and end struts, which comprises a looped connector attached to a rail of said frame, a suspending strap and a looped connector fixed to the end thereof, and an intermediate link comprising side plates and cross members extending between said plates and engaged by the looped connectors, the total thickness of the link being less than the thickness of the harness frame rail and the link being so disposed that its side plates are parallel to the length of the frame.

2. A suspending means for a loom harness frame having top andvv bottom rails and end Struts, which comprises a .looped connector attached to a rail of said frame, the outside diameter of said looped connector being of greaterl extent than the thickness of a frame rail, a SUS- pending strap and a second looped connector xed to the end thereof adjacent said rst connector and an intermediate link comprising side plates and cross members extending between said plates and engaged by the looped connectors, one of said connectors being irreleasably engaged with its end of said link and the other connector being quickly detachable therefrom, the said link and connectors being so oriented with respect to the frame that the link plates are par allel to the longitudinal plane of the frame and the total thickness of the link less than that of the frame rail.

3. A suspending means for a loom harness frame having top and bottom rails and end struts, which comprises a looped connector attached to a rail of said frame, the outside diameter of said looped connector being of greater extent than the thickness of a frame rail,A a suspending strap and a second looped connector Xed to the end thereof adjacent said first connector and an intermediate link comprising side plates and cross members extending between said side plates and engaged within the looped connectors, a nonmetallic bushing on at least-one of the cross members and extending between inner walls of the side plates forming a bearing between the connector and cross member, the total thickness of the link being less than the thickness of the harness frame rail and the link being so disposed that its side plates are parallel to the length of the frame.

4. A suspending means for a loom harness frame having top and bottom rails and end struts, which comprises a looped connector attached to a rail of said frame, a suspending strap and a looped connector fixed to the end thereof and an intermediate link comprising side plates and cross members extending between said plates and engaged by the looped connectors in such manner as to be irreleasably attached to that at the frame rail and quick releasably attached to that at the strap, the total thickness of the link being less than the thickness of the harness frame rail and the link being so disposed that its side plates are parallel to the length of the frame.

5. A suspending means for a loom harness frame having top and bottom rails and end struts, which comprises a looped connector attached to a rail of said frame, a suspending strap and a looped connector fixed to the end thereof, and an intermediate link comprisingside plates and cross members integrally formed from a plastic material, said cross members being engaged by said looped connectors, the total thickness of said link being less than the thickness of the harness frame rail and the link being so disposed that its side plates are parallel to the length of the frame.

6. Mechanism as defined in claim 5 in which the said link is reinforced by a metallic insert passed through each cross member.

7. A suspending means for a loom harness frame having top and bottom rails and end struts, which comprises a looped, metallic connector attached to a rail of said frame, a suspending strap and a looped metallic connector xed to the end thereof, and an intermediate link comprising side plates and cross members extending between said side plates and engaged by the looped connectors,

. 7 the said cross members of said links being of nonmetallic material, and the total thickness of the link being less than the thickness of the harness frame rail and the link and looped connectors further being so disposed that the side plates of the former are parallel to the length of the frame.

8. A suspending means for a loom harness frame having top and bottom rails and end struts, Which comprises a looped, metallic ccnnector attached to a rail of said frame, a suspending strap and a looped metallic connector fixed to the end thereof, said metallic connectors being formed from bent wire stock, and an intermediate link comprising side plates and cross members extending between said side plates and having a freely releasable engagement With one of said connectors and a constrictedly releasable engagement at least with the other so that unhooking of a frame shall be accomplished by disconnecting the freely releasable connector only, the total thickness of said link being less than the thickness of the harness frame rail and the link being so disposed that its side plates are parallel to the length of the frame.

9. A suspending means for a loom harness frame having top and bottom rails and end struts, which comprises a looped, metallic connector attached to a rail of said frame, a suspending strap and a looped metallic connector xed to the end thereof, said metallic connectors being formed from bent wire stock, and an intermediate link comprising side plates and cross members extending between said side plates and engaged by the looped connectors, the said cross members of said links being of non-metallic material, and the total thickness of the link being less than the thickness of the harness frame 8 rail and the link and looped connectors further being so disposed that the side plates of the former are parallel to the length of the frame.

10. A suspending means for a loom harness frame having top and bottom rails and end struts, which comprises a looped connector of bent wire attached to a rail of said frame, a second looped connector of bent Wire attached to a means from which said frame is suspended and by which movements are imparted thereto, and an intermediate link comprising metallic side plates connected by metallic cross members and having bushings of plastic material carried by said cross members and engaged by the looped connectors.

11. Mechanism as dei-ined in claim 10 wherein one of said looped connectors is of hooked form and engages its respective plastic Washer in ra freely releasable manner, and the other of said connectors is formed to engage its respective plastic washer in such manner as to require the exercise of force to eiect its detachment.

PAUL C. CONSOLETTI.

References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 611,950 Soule Oct. 4, 1898 910,160 Zimmer Jan. 19, 1909 1,322,328 Morgan Nov. 18, 1919 1,803,539 Stone May 5, 1931 1,913,513 Rossman et al. June 13, 1933 2,522,625 Lundgren Sept. 19, 1950 FOREIGN PATENTS Number Country Date 461,467 France Oct. 29, 1913 592,035 France Apr. 23, 1925