Патент USA US2118085код для вставки
May 24, 193%. W. F. HELMOND 2mm TYPEWRITING MACHINE Original Filed June 10, 1953 5356050 BY - TTORNEY. Patented May 24, 1938 2,118,085 UNITED STATES ; PATENT OFFICE mawnrrmo MACHINE William F. ?elmondfwest Hartford, Conn., as slgnor to Underwood Elliott Fisher Company, New York, N. Y., a corporation of Delaware Application June 10, 193:, Serial No. 675,254 Renewed January 19, 1937 8 Claim. This invention relates to sound and shock ab sorbing feet for typewriting machines and the like, and to hold-down means for the machine. Feet made of rubber compound as heretofore, do not prevent the transmission of sound to the underlying table to the greater degree which is (Cl. 248-24) a retired position in its desk. The hold-down device includes a catch swingable between a machine~holding position and a machine-releas ing position. The catch has a transverse pivot ing edge fulcrumed in a notch of a fulcrum-plate I which faces another plate bearing against an attainable by the use of more inert material such other transverse edge of said catch spaced from as felt. Feet made wholly of felt, the felt being relatively soft and yielding, have the drawback 10 of not standing up well under the strain and and parallel to the pivot-edge. The two plates, secured to the machine-support, clasp said catch wear. 1 The present invention provides an improved foot in which felt and rubber portions are com bined, by means of a novel organization, to_ the end that the felt portion is effective to prevent the transmission of sound, and the solid rub ber portion gives mechanical strength to the foot and at the same time conduces to the absorption of shock and noise. The novel organization is 20 moreover practical in that it affords a foot which may be readily substituted for prior feet in ma chines already in use. The felt portion may surmount the rubber portion, so that it is interposed between the rub 25, ber portion and the machine. The rubber por tion forms the base of the foot. The two por tions may be arranged so that when they are conjoined, they interlock in such manner that the felt portion is held against lateral displace 30 ment relative to the base-portion, and so that the tendency ofthe felt to spread under the load of the machine is resisted. ‘The felt por tion may also be topped by a cap formed to ?t around the periphery of the felt portion, and 35 thereby co-operating to resist spreading of the latter under the machine load. Said cap may’ be part of the attachable foot. A headed screw may pass through the compo site foot for attachment of the latter to the ma 40 chine, the shoulder formed by the screw-head co-operating with a seat counterbored from the bottom of the rubber portion to retain the foot. ~The screw may also be shouldered against the aforesaid cap which surmounts the felt por 45 tion, the shoulder at the head being preferably, at said edges with resilient pressure and act to 1-40 yieldably detent the catch in its effective and ineffective positions, determined by abutment of the catch-portion between said edges with op posite sides of the fulcrum-notch. Certain novel features of organization relate to the ap 5 plication of the described hold-down catch, in association with the front feet of the'machine, and which features conduce to simplicity, reli ability of the catch, and to minimizing the cost. Other features and advantages will hereinafter appear. - In the accompanying drawing, Figure 1 is a side elevation indicating a type writer resting on its supporting table and show ing the novel feet and hold-down device in cross section. Figure 2 is a diagram showing how the hold down device ' co-operates to, retain the type writer on its support when the latter, which is shown as part of a typewriter-desk, is tilted. .Figure 3 is a top plan view of the support on which the typewriter rests, showing the arrange ment‘of the foot-sockets and hold-down means. Figure 4 is a perspective view of the novel foot and associated hold-down means as fastened to 35 the typewriter-table quarter-sectioned. Figure 5 is a perspective view showing the parts which constitute the novel foot and the hold down means spread out to illustrate said parts in detail. , A typewriter l0, resting on a table II, is illus trated in connection with the novel feet and hold down means. Each foot includes a rubber por tion I! which forms the base of the foot and a felt portion l3. The rubber portion is reduced for minimizing noise transmission, spaced from in diameter to form a neck l4 and an upwardly said seat in the rubber portion when the screw facing shoulder IS. The felt portion or collar I3 fits the neck It and is seated upon the shoul der IS, the latter being made concave, by being beveled downwardly from its outer edge, as is driven tight against said cap. ' The feet as presented by the machine may 50 rest in sockets forming part of the support on which the machine rests, the sockets retaining the machine against lateral displacement. A novel hold-down device co-operates with the sockets to retain the machine on its support as 55 when the latter is tilted to bring the machine to shown. By the concavity of the shoulder IS, the tendency of the felt collar to spread under the load of the typewriter is resisted. The felt collar I3 overtops the neck I 4 of the rubberv por tion I! which is thereby, for the purpose of min anaoes imizing the transmission of noise, spaced from the machine. The felt collar I3 is surmounted by a cap 16‘ which embraces the periphery of the collar, and thereby cooperates to resist the spreading of the latter. , Y .. catch 34 in retaining the typewriter, as, for ex ample, when the latter, housed in a typewriter desk 43, is swung with its table it to the retired position, Figure 2, the‘ forward end oi’ the lower plate t6 may be bent around the forward end The top of the cap it bears againstv the ma i ‘ of the upper plate 35 to form a stop!“ for said chine-surface to which the foot is attached by upper plate. This stop 46 prevents undue de?ec means of a headed screw i6. Cooperating with tion of the upper plate 35 as it co-operates with a shoulder I9 of said screw is a seat 2|, which, the catch 34 to prevent dislodgment oi the type as indicated in Figure l, is counterbored from writer from the table. The typewriter-desk 42 the bottom of the rubber portion l2, The screw includes the conventionally indicated linkage 54 associated with the dropping and raising of the i8 also has a shoulder 22 which bears against table H. The foot-parts l2, l3 and i6 are pref-I the bottom of the cap i6 when the footis at tached to the machine, it being noted that the erably made uniform in dimensions, and, to 15 shoulder l9 at the screw-head is preferably spaced from the seat 2! for minimizing the transmission of machine noises to the table H. The bottom of the rubber portion I2 may be concave as shown at 23, Figure 1. The screw l8 has a thread 24 received in the typewriter 16. For retaining the typewriter against lateral displacement, the table is provided with cups or sockets 25, in which the feet of the typewriter are set, the sockets being secured to the table by bolts 26. The novel hold-down device is associated with the front feet of the typewriter, and, according ly, for each. front foot, there is a ?xed hasp or plate 29 having an eye 30 and formed as indi cated in Figure 5 to be secured by means of the screw l6 which passes through a hole 3! of said plate. A dowel 32 keeps the plate from turning, and thereby keeps its eye 30 in operative align ment with a hook-forming tongue 33 01' a catch 34 formed as indicated in the drawing. Said catch 34 is swingable between effective and in effective positions indicated respectively by the full outline and dotted outline in Figure 1. For fulcruming the catch and detenting it in either 40 position, there underlie the cup 25 for the front foot a pair of superposed plates 35 and 36, both plates extending forwardly from the cup 25 and being secured, together with said cup, to the table II by the bolt 26, each plate having a hole 31 through which the bolt passes. The plates 45 35, 36 are prevented from turning by a dowel screw 39 passing through holes 40 in the plates, and whose head is cleared by a hole 4| in the cup'25. ' The upper plate 35 is formed to present an in 50 verted V-shaped notch 42 facing the lower'plate 36, the forward end of said upper plate 35 pass ing through a slot 43 of the catch 34, which slot, as indicated in Figure 4, forms a pivoting edge 44 fulcrumed in said- V-shaped notch 42. Par 55 alleling said pivoting edge 44 is a bottom edge 45 of the catch 34, said bottom edge bearing upon the top of the lower plate 36. The plate 35 may be made of spring metal, so that the 60 plates 35, 36 are resiliently pressed together when fastened down on the table II. The por tion of the catch forming the pivoting edge 44 and edge 45 is thus clasped by resilient pressure between said plates 35, 36. It will be obvious that the resilient pressure exerted by said plate 65 35 yieldably holds the catch 34 to ‘either one of its positions which are determined by abutment of the portion included between said edges with opposite sides of the V-shaped notch 42. As the 70 catch‘ 34 is swung to either one of its positions , there is momentarily a slight separation of the plates 35, 36 as the lower edge 45 is thrown be tween opposite sides of .the fulcrum formed by the notch 42. In order that the resilient plate 75 35 may be buttressed as it co-operates with the compensate for the absence of the hold-down 15 parts at the rear feet, the cups 25 for said rear feet may rest uponshims 41. ~ For handling the composite foot as a unit which includes either the cap l6, or both said cap and the hasp-plate 23, the parts are held together by the screw H. For this purpose, the cap 16 alone, as for the rear feet, is threaded over the screw-thread 24, or both the'cap and the hasp-plate' 23, as for the front feet, are Ni Cir threaded over said screw-thread. For facilitating the operation of attaching the composite foot to the machine, the screw-thread is undercut to a diameter less than the root diameter of the screw, as at 49, to form a shout der 53 which is co-operative with the shoulder 30 22 of the screw to retain the cap l6 and hasp plate 29, after the latter two parts have been threaded past- said shoulder 50. Said undercut or groove permits the screw to be turned without turning said parts i6, 23. At the screw-‘receiving 35 opening 3| in the hasp-plate 23 and a similar opening 5| in the cap l6, the parts may individ ually be thin enough at said openings to thread over the screw-thread 24 without being provided with a screw-thread themselves. It will be seen 40 that either the front foot including the hasp 23, or the rear foot without said hasp, may, by the described arrangement, be handled as a unit. The eye 30 of the haspéplate 29 is formed in a tongue 53 of said plate, which slopes outward 45 ly and downwardly from the top of the foot to extend parallel with the catch 34 when the lat ter is in its effective position. For avoiding the transmission of sound to the table II, the ar rangement may be such that‘, as indicated in 50 Figure 1, the catch 34 when in effective position does not contact the hasp-plate 23. ' Variations may be resorted to within the scope of the invention, and portions of the improve ments may be used without others. ' 55 Having thus described my invention, I claim: 1.‘ A shock and noise absorbing foot attachable to a typewritingmachine or the like, including a base-portion of rubber having an upwardly extending, reduced neck to form an upwardly facing circumferential shoulder, and a collar of ‘relatively inert sound-absorbing material sur-’ rounding said neck, said collar seated on said shoulder and overtopping the neck, so that "it is 65 interposed between said rubber portion and the machine-surface ‘to which the foot isattached, whereby said base-portion, resting/on a ma chine-support, sustains said machine through the medium of said sound-absorbing collar to 70 thereby minimize the machine noises. 2. A shock and noise absorbing foot attachable to a typewriting machine or the like, including a base-portion of rubber having an upwardly extending, reduced neck to form an upwardly 75 3 2,118,085 facing circumferential shoulder, and a collar of relatively inert sound-absorbing material sur rounding said neck, said collar seated on said shoulder and overtopping the neck, so that it is interposed between said rubber portion and the machine-surface to which the foot is attached, whereby said base-portion, resting on a ma chine-support, sustains said machine through the medium of said sound-absorbing collar to thereby minimize the machine noises, said shoul der being concave to enable the base-portion to resist spreading of the relatively soft collar un der the machine load. 3. A shock and noise absorbing foot attach 15 able to a typewriting machine or the like, in cluding a base-portion of rubber having an up wardly-extending, reduced neck to form an upwardly-facing circumferential shoulder, and a collar of relatively inert sound-absorbing mate 20 rial surrounding said neck, said collar seated on said shoulder and overtopping the neck, so that said machine-surface and into the rubber por tion for retaining the foot laterally of the ma chine. 6. In a machine of the character described a shock and noise absorbing foot which includes a resilient base-portion restable on a machine-sup port, said base-portion formed of rubber and having an upwardly-extending, reduced neck- to form an open upwardly-facing circumferential shoulder, a collar of relatively inert sound-ab sorbing material surrounding said neck, said 7col lar seated on said shoulder and over-topping the neck so that it is interposed between said rubber portion and the machine-surface to which the foot is attached, and a stud projecting down wardly from said machine-surface and into the rubber portion for retaining the foot laterally of the machine, said collar having a cap‘ ?tting the periphery of the collar to thereby resist spread ing of the latter under the machine load. 20 7. In a machine of the character described; a it. is interposed between said rubber portion and ' shock and noise absorbing foot which includes the machine-surface to which the foot is attached, whereby said base-portion, resting on a 25 machine-support, sustains saidmachine through the medium of said sound-absorbing collar to thereby minimize the machine noises, said foot, including the rubber portion, having a hole, whereby the foot is retained laterally, by means 30 of a stud on the machine. 4. A shock and noise absorbing foot attachable to a typewriting machine or the like, including a base-portion of rubber having an upwardly extending, reduced neck to form an upwardly 35 facing circumferential shoulder, and a collar of inert sound-absorbing material surrounding said neck, said collar seated on said shoulder and overtopping the neck, so that it is interposed be tween said rubber portion and the machine-sur 40 face to which the foot is attached, said collar having a cap ?tting the periphery of the collar, to thereby resist spreading of the latter under the machine load. 5. In a machine of the character described a 45 shock and noise absorbing foot which includes a base-portion of resilient material restable on a machine-support, said base-portion having an upwardly-extending, reduced neck to form an open upwardly-facing circumferential shoulder, 50 a collar of relatively inert sound-absorbing ma terial surrounding said neck, said collar seated on said shoulder and overtopping the neck ‘so that it is interposed between said rubber portion and the machine-surface to which the foot is at 55 tached, and a ‘stud projecting downwardly from a base, of solid rubber, restable on a machine support, a block oi relatively inert sound-absorb ing material seated on said rubber base to coact with said base to support the weight of the ma chine, and a stud penetratingsaid rubber base and said block and attached to the machine for retaining the foot laterally of the machine, whereby said block spaces and thereby insulates 30 said rubber base from the machine to substan tially prevent the transmission of sound to said machine-support. . . 8. For a typewriting machine, an attachable composite double foot'having a main solid rub 35 bar portion which gives mechanical strength to ' the double foot and conduces to the absorption of shock and noise, and a felt portion sufficiently massive to substantially prevent the transmis sion of sound, said rubber portion being sur mounted by said felt portion, the latter being in terposed between the rubber portion andthe machine, said rubber portion forming the base‘ of the foot, said rubber and felt portions formed to interlock for holding the felt portion against 45 lateral displacement relatively to the rubber base“ portion; said felt portion being capped by a thimble ?tting tightly thereto and operating to resist spreading of the felt under the machine load, the cap being a part of the attachable foot, 50 and a headed screw passed up through the com posite foot and attaching the latter to the ma chine and also serving to locate the foot upon the machine. ' ' v _ , WILLIAM F. HEIMOND.