US2351725A

US2351725A - Apparatus mounting arrangement

Info

Publication number: US2351725A
Application number: US416307A
Authority: US
Inventors: James E Wack
Original assignee: Teletype Corp
Current assignee: AT&T Teletype Corp
Priority date: 1941-10-24
Filing date: 1941-10-24
Publication date: 1944-06-20
Anticipated expiration: 1961-06-20

Description

June 20, 1944.

J E. WACK APPARATUS MOUNTING ARRANGEMENT Filed Oct. 24, 1941 5 I v 5 I FIGQ 4 FIG.3

FIG. 2

INVENTOR.

JAMES E WACK TORNEY.

Patented June 20, 1944 James E. Wack, Chicago,

Corporation, Chicago Delaware 111., assignor to Teletype 111., a corporation of Application October 24,1941, Serial No. 416,307

'8 Claims.

This invention relates to vibration dampening supports for printing telegraph machines and other similar machines.

Duringthe'normal operation of printing telegraph machines, vibrations occur which may a resilient support for machines 4 having operating-parts wherebythe normal-vibrations of the machine maybe absorbed.

A'f-urt-her objectof the invention is to provide means-to take up'a-bnormal shocks of the machine which-may occur -in printing telegraph machines.- This condition arises forinstance, when the -carriage of-a machine at certain times makes a very rapid return to its beginning of line position and produces a torque which tends to rock the machine on-its-vibration dampening supports-due to the fact that the rapid travel of the carriage "causes a sudden displacement of weightfromoneside ofthe machine tothe other.

Another object of this invention is to-provide suitable guiding means for a-machine toassure that the machine'assumes its proper position on its supports.

Provision is also-made to facilitate the insertion'ofa machine into' and removal from a cabinet of the-type in which the machine must'be slid outthrough anopening of thecabinet as distinguished from-a machine which may be lifted upwardly from its 1 supports.

Incarrying out-thisinvention, a pair of resiliently mounted spaced skids are employed for supporting printing telegraph machines and taking up-the normal vibrations of the machine. In the slide-out type of machine, provision is made for the easy removal of. a machine froma cabinet by bending over the forward portions .of the skid to provide a sliding surface for the front depending lugs of the mac-hineso that the machine may be easily slid along the skids tothe rear, after the rear of 'themachine has been firstraised to clear the reardepending lugs of the machine from locating holessituatedat the rear of the skids.

In order to take up sudden shocks of a machine, it is proposed to utilize a-buffer padplaced between the supporting shelf 4 and the skids to take up the rocking motion of the machine.

The invention may be more fullyunderstood by reference to the drawing and to the accompanying description.

Fig. l is a perspective View featuring a pair of skids designed for the slide out type of machine;

Fig. 21s a sectional View showing the base of a machine supported on the skids with the rear door of th cabinet open;

Fig. 3 is a perspective view of the invention showing a modification of the-skids designed for the lift up type of machine; and

Fig. 4 is a longitudinal sectional view of the modification featured in Fig. 3 showingthe base of the machine resting on a skid.

Referring to the drawing, Figs. 1 and 2 show skid supports designed tohold a machine of the type which may be slid horizontally into or out of a cabinet. The cabinet is shown at 5 and as illustrated'has its rear door 6 in its open position. The machine I has depending lugs 8 which act as guiding membersfor the machine.

Within the cabinet is a shelf 9 upon'opposite sides of which are-resiliently-mounted-skids Ill. The skids are resiliently supported by mountings indicated generally at H. These mountings-may be of the type disclosed in Patent N0.-1,778,503 to H. O. Lord, October 14, 1-930. The mountings comprise a resilient memberlZ into which is partially embedded a plate I3 having at its corners apertures adapted to receive screws l4. Each mounting is attached to the shelf bymeans of screws l4 and nuts l5 as shown in the cutaway portion of Fig. 1. By means ofbolts I6 and screws H, the skids are attached to the resilient mounting in spaced relation from the shelf 9. A flange l8 isprovided at the outer side of each of the skids to act as guides for the lugs 8 of the apparatus, as the apparatus is slid along the skids.

At one end of-the skids l0 are located apertures l9 which are adapted to receive the depending lugs -8 of the machine I. At-the opposite end of the skids, a bent over portion 20 is provided, the bent over 'portion extending into apertures 2! of theshelffi.

For the purpose of describing the method by which the machine maybe removed from the cabinet with facility, it will be presumed that the machine is set upon the skids-as shown in Fig. It will be-noted thatrear lugs*3 of the machine are restingin apertures 'l9 while the front lugs 8 are postioned a shortdistance from the bent over portions-20 ofthe skids. It is'to be further observed that the base cfthe machine directly contacts the entire length of the skids, with lugs 8 serving to locate the machine in its proper position on the skids. In order to removethe cabinet through the open doorway, door 6 is first opened as shown. The rear end of the machine is raised until lugs 8 clear the apertures Hi. The machine is then slid rearwardly. At this time the front lugs 8 will ride up the inclined portions 20 of the skids and the machine is then easily slid the remaining distance out of the cabinet. Bent over portions 20 are projected into apertures 2| in order to insure that lugs 8 do not catch onto the end of the bent over portion 20 and damage the skid.

To insert the machine into the cabinet, it is necessary only to lift the machine onto the skids ID with front lugs 8 positioned in front of the.

apertures I9 and to then slide the machine; forwardly until rear lugs 8 drop into apertures In Figs. 3 and 4 is illustrated a type of skid which is designed for the lift up type of printing machine. The skids 3|! are supported on resilient mountings 3| as before described except that in this instance the mountings are attached to shelf 32 by means of spacers 33 and bolts 34, in order that a bufi'erpad 35 may rest flat on the shelf 32 without any obstructions, which condition would not exist if the mountings employed in Figs 1 and 2 were used, as in the latter type of mounting, resilient member |2 protrudes above the surface of shelf 9. V

The skids 30 are provided with notches 36 into which project the lugs 31 of the machine 38 when the machine is placed upon the skids. The base of the machine directly contacts the skids with the lugs 31 serving to locate the machine in its position on the skids; that is, with the lugs resting in the notches 36 of the skids. Notches 39 are provided on the skids to receive electrical receptacles but this forms no part of the invention.

A further feature of the embodiment of the invention, shown in Figs. 3 and 4 of the drawing, is the provision of the buffer pad 35 which is relatively thick and made of felt material, the purposeof which will now be explained. As previously mentioned in the specification, abnormal shocks occur during the operation of some types of printing machines. This condition arises when the carriage of a machine at certain intervals in the operation of the machine makes a very rapid return from right to left and produces a torque which tends to rock the machine upon the resilient skid supports.

In order to take up thesesudden shocks, the

2,351,725 V. the left skid is first depressed and ordinarily the buffer pad 35 is placed upon the shelf 32 to underlie the skids as shown in the drawing and a clearance 4|] is provided betweenthe skids 30 and the buifer pad 35. During normal operation of the machine, the vibrations are taken up by the resiliently mounted skids 30. However, should the carriage of the machine make a quick return, the machine tends to rock as explained and the weight of the machine is then taken up by the buffer pad as one or the other of the resiliently mounted skids 30 is depressed and abuts against the buifer pad due to the torque set up by the rapid return of the machine carriage. Inasmuch as the machine tends to rock in a counterclockwise direction as viewed from the front of the machine, the skid at the left will be depressed first and the first rocking movement of the machine will be taken up at the left side of is its scope to be limited thereby.

The use of the buffer pad enables vibration.

the buffer pad. The machine will then rebound 7 machine does not retain enough momentum to depress the right skid.

Provision is also made in this embodiment of the invention, shown in Figs. 3 and 4 of the drawing, for the absorption of vibrations of various amplitude ranges in the arrangement of the parts therein shown. Between the buffer pad 35 and the resiliently mounted skids 30 is a clearance space 43 which, in addition to those previously described, is provided for the purpose of permitting vibrations of one amplitude to be absorbed by the resilient mountings 3| and vibrations of a greater amplitude to be absorbed by the. buffer pad 35, coacting with the mountings 3|. This arrangement of the various described parts permits the utilization of material within the members 3| of such resiliency that vibrations of small amplitude can be absorbed thereby and vibrations of greater amplitude by the buffer pad 35. The clearance space 50 provides the diiferential range of amplitude, and vibrations of such magnitude as cause the apparatus to oscillate vertically within the space clearance 43 are essentially absorbed in the resilient mountings 3|, no part thereof being conveyed to the buffer pad 35. When vibrations of an amplitude greater than that fixed and predetermined by the space interval 43 occur, they are transmitted by the ,iresilient members 3'3 to the buffer pad 35 and approach their maximum amplitude capacity of absorption. 7

Selection of the range of vibration amplitudes,

as provided for in this embodiment of the invention, is effected in one of two ways or in a combination of both. The clearance space 40 may be increased or decreased. If the space 40 is Eincreased, the range of amplitude of the vibration absorbed by the resilient mountings 3| is increased. The converse is true if the space 40 is decreased. The space diiferencesin turn, determine the amplitude ranges beyond which the absorption qualities of the felt pad 35. become efiective. The other condition may be provided through the selection of the resilient materials used in the mountings 3| and the vibration absorbing member 35. In this particular application of the invention, rubber is employed in the mountings 3| and felt in the member 35; It is not to be inferred, however, that the invention is restricted to the use of these materials only, nor

mountings to be employed whichv are sensitive. enough to take up the ordinary vibrations ofthe machine and at, the same time provides means-to qabsorb sudden shocks which occur at intervals in the operation of the machine, as explained;

In order to protect. the operatorfrom possible 4| to overlie the resilient mountings wherever ,there is a possibility that an operator may be injured. Such a guard is shown at the front of the machine, in Fig. 4.,

,The invention thus provides a highly eflicient vibration dampeningsupport for printingtele {digraph and other machines of this type;

What is claimed is:

1. In combination, apparatus to be supported having depending elements, a base for said apparatus, a vibration dampening support for said apparatus comprising a supporting member, spaced members resiliently mounted on said supporting member for directly supporting said base of said apparatus in line contact substantially the entire length of said spaced members and provided with means to receive the depending elements of said apparatus and locate said apparatus on said spaced members.

2. In combination, apparatus to be supported, a vibration dampening support for said apparatus, including a supporting member, spaced skids resiliently mounted on said supporting member for supporting said apparatus, to absorb the normal vibrations of said apparatus, and a buffer member provided intermediate said skids and said supporting member adaptable to withstand a rocking motion of the apparatus.

3. In combination, apparatus to be supported having depending elements, spaced members for directly supporting said apparatus, a supporting member for supporting said spaced members, one end of each of said spaced members being bent downwardly to provide an elevating cam surface coactable with said depending elements to facilitate the removal of said apparatus therefrom.

4. In combination, apparatus to be supported having depending elements, a base for said apparatus, a vibration dampening support for said apparatus including a supporting member, resilient mountings connected to said supporting member which provides the sole resilience for said vibration dampening support, nonresilient spaced members carried by said resilient mountings, said members directly supporting said base of said apparatus in line contact substantially the entire length of said spaced members and provided with means to receive the depending elements of said apparatus and locate said apparatus on said spaced members.

5. In combination, apparatus to be supported having depending elements, a base for said apparatus, a vibration dampening support for said apparatus including a supporting member, spaced skids resiliently mounted on said supporting member for'directly supporting said base of said apparatus, locating means for the depending elements of the apparatus positioned at one end of said spaced members, the other end of said spaced members being downwardly bent to facilitate the removal of said apparatus from said spaced members.

6. In combination, apparatus to be supported having front and rear depending elements, a base for said apparatus, spaced members for directly supporting said base of said apparatus, a supporting member for supporting said spaced members, one end of said spaced members being provided with locating means for said depending elements at the rear of said apparatus, the other end of said spaced members being provided with downwardly bent portions above which said front depending members of said apparatus are adapted to rest to facilitate the removal of said apparatus from said spaced members.

7. In combination, apparatus to be supported, a supporting member, spaced skids for directly supporting said apparatus, resilient mountings connecting said skids with said supporting member, and C-shaped guards to overlie said mountings to enclose the lower portions of said mountmgs.

8. In combination, apparatus to be supported having front and rear depending elements, a base for said apparatus, spaced skids for directly supporting said base of said apparatus, a supporting member for supporting said skids, guiding members at the outer sides of said skids to guide the depending elements of the apparatus, one end of said skids being inclined downwardly to facilitate the removal of said apparatus from said skids, and the other end of said skids being provided with notches to receive the rear depending elements of the skids, the front depending elements of the skids being adapted to overlie the downwardly inclined portion of the skids.

JAMES E. WACK.