US2568531A

US2568531A - Silencing pad

Info

Publication number: US2568531A
Application number: US65839A
Authority: US
Inventors: Harry C Yaeger
Original assignee: Underwood Corp
Current assignee: Underwood Corp
Priority date: 1948-12-17
Filing date: 1948-12-17
Publication date: 1951-09-18
Anticipated expiration: 1968-09-18

Description

H. C. YAEGER SILENCING PAD Sept. 18, 1951 2 Sheets-Sheet 1 Filed Dec. 17, 1948 su 03% w.

INVENTOR. x4/My c. 1565K ATOR/VE'Y H. c. YAEGER SILENCING PAD sept. 1s, w51` 2 Sheets-Sheet 2 Filed Dec. 17, 1948 .A m@ n mf N wmf@ y R 5W n Patented Sept. 18, 195i Harry C.Yaeger,'We's`t Hartford, Conn., assignor to Underwood. Corporation, NewYork, N. Y., a

corporation of Delaware Application December 1'7, 1948,seria1 No. 65,839

1 claim. (o1. 24:3;22)

Y The present invention relates to silencing pads for'typewriting and business machines.`

It is an object of the present invention'to pro-j vide a'silencing pad having means whereby a4 typewritingfor business machine may bereadily detatchably secured thereto without the us`e`o`fi screws or other separate fastening means.

Itis another object of the present-invention to provide a silencing pad which is usable lwith: any make or style of typewriter and `which may be economically manufactured and easily assembled.

It is a further object of the present invention to provide a silencing pad usable with any make or style of typewriter and which is also'usable with any style of desk.`

It is a still further object of the present invention to' provide a silencing pad comprised ofv a plurality of parts so constructed and arranged that the major parts are adapted for use with any make or style of typewriter or with any style of desk.l

These and further objects, features and advan-` Fig. 4 is an enlarged View taken alongfthe'line` 4--4 "of Fig. 1,

Fig." 5 is a plan View, partially broken away, showing the silencing pad of the present invention provided with fittings somewhat different from" the ttings shown in Fig. 1,

Fig.'6 is a plan view similar to Fig. 5 but show# ing a still different set of fittings,

Fig.` 7 is a diagrammatic view showing a type`` writer and silencing pad secured'to a desk and showing the desk in its folded condition, andi Fig. 8 is an enlarged view taken along the line 8 8 of Fig. 5 and diagrammatically showing a typewriter in position upon the pad.

The silencing pad of the present invention is composed of four basic or major parts. `As shown in the drawings, these parts are a cushion I0 of fibrous material, such as felt, a semi-rigid cover I I for the cushion and a pair of relatively heavy plates I2.

The cover II is coextensive with the cushion andis provided with a marginal flange I 3 extendinggdownwardly over the edges of the cushion. The cover II may be made of any suitable materiaLysuch, for example, as shet steel, and it serves the twofold purpose of protecting the cushionfrom dirt and of distributing the weight of the typewriting or other machine more evenly over the surface of the cushion so that same will not become packed down under the feet of the machine. If desired, the cover may 'beI secured t'the cushion by means of glue, or other suitable securing means.

best seen in Fig. 3, the cover is provided with a plurality of symmetrically arranged open-` ings, or slots, I4. The cushion Ill is provided with a plurality of openings, I5 aligned with the slots I4, for a purpose to presently appear.

The plates I2 are identical and eachis providedwith a plurality of tabs II.` The plates I2, inthe embodiment shown, are made of relatively heavy stock so that they are substantially rigid, though` it is to be understood that in some instances` these plates may be somewhat flexible without departing from the spirit of the present invention. At any rate, the plates I2 together with the cover I I provide double laminations between the `machine and the cushion, as will later more f ully appear.

For adapting the silencing pad of the present invention for use with various makes and styles of machines and various styles of desks, the plates I2 are to be provided with different fittings, as will presently more fully appear.

The plates I2 may conveniently be attached to` the cover I I by extending the `tabs I6 through theI appropriate openings I4 and bending them over, as Shown in Fig. Il. The openings I5 in the cushionreadily permit` this bending operation in cases where the cushion has been previously secured to the cover I I. l

A pair 0f holes Il, extending through each of the plates I2, the cover` II and the cushion I0,

may be provided for accommodating bolts or other means for securing the pad to a desk.

In Figs. 1 `and 2 are shown fittings which are appropriate whenthe pad is to be used with an Underwood electric typewriter, and the desk is of' the type` which causes the typewriter to Slope" rearwardly when the desk is folded to conceal the machine. Each of the plates I2 is provided with anun-,like element I8 forreceiving positioning means `carried by the machine, as will readily be understood. Each plate.I2 is also provided'with,

a fasteningtmeans, generally indicated at i for detachably securing the typewriter to the pad.

Asurnay best be seen in Fig. 2, the fastening means I9 comprises a plate 2i) bent upwardly at. its forward end to provide an extension ZI'. The plate 20 Ais provided with an opening intheform` of `a

slot

2,2` within which is loosely `tted a men. ber 23. The member 23 is provided yat oneend with a hooked portion 2li and at its other end has an operating tab 25., A leaf spring 21e, riveted` or otherwise secured to the plate ZB at 2l,,exju

tends through an opening 2li in the member 2 3 andbears against the upper sideof the operating tab-25 to'resiliently hold the member 23 in the position shown in Fig. `2.

The typewriter, the base of which is partially indicated at 29, has attached thereto, by means of a screw 39, a fitting 3I provided with a slot 32. Near its front, the typewriter is provided with positioning means in the form of a rubber disc 33 secured to the under side of the machine by a screw 34. It will be understood that there is a fitting 3I and a disc 33 on each side of the machine.

When the machine is to be used with the silencing pad, the discs 33 are placed within the cups I8, and as the machine is lowered into. resting position, the ends of the fittings 3I press against the rounded upper side of the hooked portions 24 and cam members 23 rearwardly against the action of the leaf springs 25 to the position shown in dotted lines in Fig. 2. As the machine reaches its lowestposition, .the springs 26 snap Vthe members 23 back to the full-line position shown in Fig. 2 with the hooked portions 24 extending through the slots 32. The machine is then resting upon a pair of resilient runners 29, one runner extending lengthwise ofthe machine underneath either side thereof. When that part of the desk carrying themachine is level, it will be noted from Fig. 2 that there is no contact between the member 23 and the fitting 3| thus no vibrations will be transmitted through this connection. When the machine is sloped to the rear, as when the desk is folded, the hooked portion 24 will secure the typewriter against displacement, as

will readily7 be understood.

With the fastening means I9 constructed as shown, it is apparent that the tab 25 must be raised to release the machine. This feature is advantageous over the older constructions Wherein a tab is moved downward to release the ma,- chine inasmuch as there is less likelihood of the present fastener being accidentally released.

In Figs. and 8 are shown fittings for the plates I2 which are adapted for use with an Underwood electric typewriter when the desk is of the type which when folded to conceal the machine causes the machine to slope toward the front. In this instance, the plates I2 are again.

provided with the cup-like element I8, butinstead of the fastening means I9, each plate is provided with a member 35. The' members .35 are bent at 33 so that their rear ends are spaced from the plates I2. The typewriter is provided underneath, near its rearmost edge, with a bar.

31, secured thereto by means of screws 38 Vor otherwise. When the typewriter is to be used with apad fitted as shown in Figs. 5 and 8, the bar 31 is first slipped beneath the members 35, and the discs 33 are then placed within the cup-like elements I8. Thus the elements I8 and the mem bers 35 serve as means to locate the machine in a definite position and to releasably hold it inH said position. When the desk is folded so that the typewriter slopes toward the front, the members 35, by cooperation with the bar 31, will prevent the machine from moving with respect to the pad. It will be observed from Fig. 8, however, that when the machine is level, there iS no contact between the bar 31 and the members 35 and hence no vibrations will be transmitted through this connection. 1

Figs. 6 and '1 show fittings appropriate for -us with an Underwood standard typewriter. The fittings are arranged in these two figures in such manner as to adapt the pad for use with the type of desk which causes the typewriter to'slope toward the rear when the desk is folded, such folded condition being illustrated in Fig. 1. .Invr

this instance, each plate I2 is' provided near one end with a cup-like element 39. The cups 39 are somewhat larger than the cups I8 to accommodate the somewhat larger feet of the machine. Near the end opposite the cup-like element 3'9, each plate I2 is provided with a fitting, generally designated 40, comprising a plate 4I having a pair of upwardly and inwardly extending flanges 42 and an end wall 43. In positioning an Underwood standard typewriter 44 upon the pad, the front feet 45 thereof are first slipped into the fittings 40 so that a lower rim 46 of each foot is resting against the end wall 43 and beneath the inwardly extending top edges of the flanges 42, as best seen in Fig. '1. Y The rear feet 41 arethen positioned within the cup-like elements 39. Thus the elements 39 and the fittings 49 serve as means for supporting and for releasablyV holding the machine.

While only a few examples of the various possible fittings for the plates I2 have been shown,v

it is to beV understood that other fittings are to be employed when the silencing pad is to be used,`

plates by spot welding, by riveting or by anyl other convenient means.

Thus it will be apparent that the major parts of the present pad may be economically manufactured in large numbers, and the fittings adaptl ing it for use with different machines may be provided as they are needed. Likewise the appropriate ttings, or plates I2 carrying appropriate fittings, may be assembled in the field with the other parts of the pad, thus appreciably decreasing the bulk of stock necessary to be kept on hand at various sales outlets.

Having thus described the invention, Iwhatis;

claimed is:

A silencing pad for VAtypewriting Yandbusiness machines comprising a cushion of fibrous ma-l terlal having a coextensive semi-rigid cover con-A nected theretoa plurality of aligned openings through said cushion and said cover, the openings in said cushion being larger than the openings in the cover, a pair of relativelyV rigid monoplanar plates each having a, plurality of ,tabs and carrying means constructed andarranged to support a typewriter or business machine Yand -to detachably secure saidvmachine `,to said plates the tabs extending through the openings in said cover and' being bent over to secure said platestosaidcover.

,HARRY C. YAEGER.

REFERENCES CITED 1 The following references are ofurecord in the file of this patent:

A UNITED sTATEsPATENrs NumberV y i Name e Y Date 468,010 wood y Feb. 2, 1892V 632,911 Berry sept. 12, 1899 1,946,255 Harding Feb. 23, 1932- 2,351,725 Wack June 20, 1944 2,359,002 Ryther w sept2e, 1944! Jiminez Oct.V 25, 194:9 f