US1770605A - Sash sustainer - Google Patents

Description

.July 15, 1930;

, Y BY ATToRNEYs J1xly'"1"`5, 1930. H. ELLlsoiN 1,770,605

SASH SUSTAINER Filed April 2m 192e 2 sheets-sheet 2 Patented .uly 15, 1930 sATEs EDWARD 1-1.,Y ELLrsoN, or JAMEsToWN, YNEW *sioni-i, Assienoa, BY Masiva Assiem- MENTS, TO AUSTRAL WNDOWKCOMPANY, OF NEW YORK, N. Y., A CORI?OIIELL'JTLONl 0F MAINE sasn SUSTAINER Application led April 27, 1926. Serial No. 1U,896.

rIhis invention relates to improvements in sash holders of the spring-pressed roller type wherein the rollers are permitted to roll` freely as the window is raised, but are held from rotation as the window is lowered, whereby to exert frictional resistance to the downward movement of the window, and to methods of manufacturing the same.

it is an object of my invention to provide an improved one-way clutching arrangement for the roller and to provide a roller housing for the roller` and its clutch which may be readily and inexpensively manufactured from sheet metal.

it is a further objectr of my invention to provide a method of manufacturing the sash holder and particularly the housing therefor according to my invention with a minimum of individual workmanship and a maximum of automatic, or semi-automatic machine work, whereby the same may be produced in large numbers at a relatively small cost per unit, and without the employment of skilled labor.

It is a further object of my invention to provide an improved housing for the sash holder, and a method of manufacturing the same from sheet metal with the minimum wastage of material in forming the individual blanks from a strip, and generally, to cheapen the cost of manufacture without irnpairing the quality of the article;

Still further objects will be apparent from.

the specification. y

VThe features of novelty which I believe to be characteristic of my invention are set forth with particularity in the appended claim. My invention itself, however, both as to its underlying principles and as to its practical embodiment, lwill best be understood by reference to the specification and accompanying drawing, lin which, p

Figure 1 is a side elevation of a window sash showing my improved sash holder api plied to the edge thereof, a portion only of the sash being shown;

Figure 2 is a section taken on line 2*-2 of Figure 1, the roller housing being shown in side elevation and in normal operative position;

Figure 3 is a transverse section through the rollers and roller housing showingthe relation of the floating roller, the fixed roller,

and housing, the view being taken on line Figures 6 and 7 show the appearance of the blank after the first bending operation thereof has been completed. Figure 6 being a front elevation and Figure 7 a section on lines 7 7 of Figure 6.

Figures 8, 9 and l0 are respectively, side and front elevations and a plan of the partially completed housing after the sides of the same have been bent into shape;

Figures 11, 12 and 13 are respectively side and front elevations and a plan of the housing after the rear wall thereof has been brought into form;

Figure li is a side elevation of the housing showing the side wall as perforated for the roller shaft;

Figures 15 and 16 are respectively side and front elevations of the main roller;

Figures 17 and 18 are respectively side and front elevations of the fioating roller;

Figure 19 is a plan view of the spring ank which is part of the complete assem- Figure 20 isa side elevation of the complete sash device.

ln the drawings, l indicates a window sash having a depression or cut-out portion 2 within 'its upright side edge within which the housing 3 of theroller device is posif tioned, the housing being secured to the lower end of a spring i the upper end of which is secured by means of a screw 5 to the sash. An abutment for the spring slightly above its flexing point is provided by the head of a wood screw 6 sunk into the sash. The spring is provided with an opening 7 somewhat smaller, than the head of screw 6 to allow a screw driver to be inserted through the hole into the slotted head of the screw to move the same for adjustment purposes.

The main roller is indicated at 8, the same being mounted on a suitable shaft 9 which passes through the side walls 10 of the housing. The housing has a rear Wall 11 provided with a downwardly extending tail-like extension 12 bent towards the front end of the housing. The rear wall is formed in a manner to provide a gradually decreasing distance between it and the fixed roller 8 whereby a wedging space is formed for a Vfloating roller 13.

The floating roller tends to wedge between the main roller 8 and the rear wall 11 when the main roller 8 is turned in a clockwise direction as viewed in the drawings, or in other words, when the sash is being lowered. The main roller is thereby prevented from rotatlng and, inasmuch as the spring 4 presses the roller einst the window casing, sliding friction wi 1 be exerted between the window @Sing and roller 8 as will be readily understood. pward movement of the sash will Cause the roller 8 to rotate in a counterclockwise direction and elevate the floating roller 13 sufficiently to prevent wedging of the Some between the roller 8 and rear wall 11 0f the housing as will likewise be readily understood. The floating roller may if desired be,` provided with serrations 14 preferably spirally arranged to give a better gripping action to the same.

The manner of making the housing 3 will now be explained. The first operation is to stamp from a sheet of metal a blank of the form shown in Figure 5. This blank consists of a body 15 having a downwardly extending part or tongue 16, spaced extensions or wings 17 on the opposite edge, and side portions 18. The first operation of bending the blank into form is to bend over the parts 17 as indicated in Figures 6 and 7. The next o ration is to bend over the side wings 18 o the housing 3 as shown in Figures 8, 9 spd 10. The rear wall 11 and lip or extension 12 of the housing are then formed to the shape shown in Figure 11 by pressing body 15 and extension 16. Referring to Figure 3, it will be seen that the inner surface of the rear wall lies in the arcs of two circles, having radii 19 and 20 respectively. The radius 19 has its center at a point 21 beyond the main roller 8 while radius 20 has lts center at 22 between the axes of the two rollers, both radii being centered in the plane passing through the axis of the rollers when 1n the position shown in Figure 3.

By referring to Figure 5, it will be seen that there will be practically no wastage of the Sheet metal 30, from which the blanks are struck, except for margin portion 31, if the depth of tongue 16 and wings 17 are equal, and if the width of tongue 16 is'less than the space between wings 17. It is of course necessary to leave a small margin or space between blanks to assure a clean stamping, as will be readily understood. This economy of material results from the particular bending operations performed to transform the blank into final sha e, which I have worked out to produce t is effect. That is to say, the disposition of the various wings and tongues, or other extending portions on the blank, and the bending o rations necessary with any particular s ape of blank and disposition of wings, are all interrelated and are related to the wastage of material in cutting blanks, and I have described what I believe to be the most economical arrangement and process from all standpoints, producing the most economical product.

It will be seen that, in accordance with my invention, the proper] cut blanks may` be stamped continuously by automatic machinery from a strip of metal and may be stamped with or without the holes necessary for assembling. These blanks may then be fed into a second machine which performs the first bending operation, turning down the parts 17. The blanks with the form shown in Figures 6 and 7 may then be fed into another machine which bends parts 18 into position and finally they may be fed into another machine whichV bends the rear wall 11 to final form. lVhile I have spoken of feeding the blanks from one machine into another, it will be clear that successive stages of the same machine may perform the various operations, in which case strip metal would be fed into the input of the machine and the finished housing as shown in Figures l1, 12 and 13 would be turned out.

If holes have been punched at the proper points in the blank, either before or after the various forming operations, shaft 9 ma be inserted through one side wall 10, throu h rolle;` 8 properly positioned and through e other side of wall 10, and retained thenein in any suitable way as for instance, by forming a head on shaft 9 before insertion in the housing 3, and flattening the other end after the 'shaft is properly positioned or by flattening both ends. Floating roller 13, must of course be placed in the housing before mounting main roller 8 in position.

Spring blank 22 will be bent or otherwise formed to the proper shape, and may be attached to housing 3 in any suitable manner as, for example, by rivets 23 or welding, after which the device is ready for attachment to the window sash as shown.

The operation of .the arrangement will be clear from the following description: As the sash is moved upward, main roller 8 turns in a counter-clockwise direction, as seen in Figure 3, thereby lifting floating roller 13, with the result that main roller 8 turns freely in a counter-clockwise direction. When 1t f is attempted kto rotate roller 8 in a clockwise .s of smaller radius.

direction, as by lowering the Window, float-` ing roller 13 is turned in acounter-clockwise dlrectlon, and passes downward in the housing. The rear wall 1s a cam-like surface,

Y which, considered from its upper end, gradually approaches the surface of the main roller 8, the lower portion of the cam surface approaching the rollers surface more rapidly than the upper portion, since it is an aro The size of the floating roller 13 is such that it begins to wedge between the main roller 8 andthe surface of rear wall 1 about midway the length of the later as kshown in Figure 3. Thisarrangement permits the main roller 8 to be firmly and positively locked by the floating roller as will now be readily appreciated.

It is to be noted at this time the curvature Y of rear wall 11 as shown provides for a much more gradual wedging action by roller 13 than would take place if rear wall 11 were a surface normal to the diameter of main roller 8. This results in a more positive locking engagement of main roller 8, and decreases the possibility of failure of the sash holder to hold the sash in position, thereby producing an article superior to that having a straight rear wall.

W'hat I claim is:

A window sash having a cut out portion therein; a leaf spring member attached to the sash 'and adapted to extend within the cut out portion; a housing having side walls and a rear wall; a stationaryand a floating roller contained within the walls of the housing; the housing with its rollers being suspended A on the said leaf spring member and concealed within the cut out portion of the sash.

In testimony whereof, I have hereunto Set my hand this 24th day of April, 1926.

' EDWARD H. ELLISON.

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