US1796137A - Resilient stamp pad - Google Patents

Description

March 10, 1931- E. BAUMGARTEN RESILIENT STAMP PAD Filed Dec.

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A ZTDHNE Patented Mar. 10, 1931 UNITED STATES PATENT oFFicE EMANUEL BAUMGARTEN, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR '10 VELVET PAD AND INK 00., A CORPORATION OF DELAWARE RESILIENT STAMP PAD 'Application filed December 16, 1927.

The invention relates to stamp pads for inking purposes, and has for its objects to provide an improved stamp pad of resilient construction and inherent advantages. The principal object of the invention is to provide a resilient stamp pad composed of a minimum of parts which may bereadily and conveniently assembled or dismantled when desired. In its assembled position the pad elements are, maintained against displacement by the resilient and yielding action of its supporting base due to the nature and configuration of the latter. The peculiar and novel construction of the resilient base rendersthe pad readily yieldable or distortable for the purpose of inserting or releasing the pad member while yet combining the advantages of firmness and rigidity when the pad is in use.

A further object is to provide a stamp pad which may be economically manufactured and which constitutes marked-improvements over pads of the same general character which are now in use.

lVith such objects in view, as well as other advantages which may be incident to the use of the improvements, the invention consists in the parts and combinations thereof hereinafter set forth and claimed, with the understanding that the several necessary elements constituting the same may be varied in proportions and arrangement without departing from the nature and scope of the invention.

In order to make the invention more clearly understood there are shown in the accompanying drawings means for carry ng the same into practical efliect, without hmit ng the'improvements in their useful appl cations, to the particular constructions WlllCh, for the purpose of explanation, have been made the subject of illustration.

In said drawings Fig. 1 is a plan view of a resilient stamp pad constituting a preferred embodiment of the invention.

Serial No. 240,477.

Fig. 2 is a side view with the removable slip cover member shown in vertical section.

Fig. 3, a longitudinal vertical section on line 33 of Fig. 1.

Fig. l, a similar view of the resilient base portion of the pad.

Fig. 5 is a fragmentary detail sectional view in which the top of the ink applying pad member is positioned below the top of the resilient base member to provide a more pronounced V-shaped marginal chamber for receiving any surplus ink from the surface of the pad, from which marginal chamber the ink is absorbed by the pad member.

Referring to the drawings, the frame or base of the pad is indicated at 1 and is constructed of resilient material such as relatively soft vulcanized rubber. The base is illustrated as of rectangular configuration, but it will be understood that the same may be made square or round or possess any other configuration, if desired. As best seen in Figs. 1 and 4: the resilient base or frame is molded in one piece and is provided with a central aperture 2 of substantially the configuration of the base member and which extends entirely therethrough. A peripheral recess or groove 3 is provided in the base and is suitably spaced between the top and bottom walls thereof. Said recess is preferably continuous and extends entirely around the resilient base member 1 as will be best seen in Figs. 1 and 4. The resilient member or frame is further provided on its top face with an inwardly projecting pad-retaining flange or shoulder l, formed integrally with the base member and which flange overhangs the aperture 2 and is preferably continuous in extent around the entire periphery of the base. If desired,-a continuous recess 5 may be provided on the under surface of the resilient base member, or a plurality of such recesses may be employed, to form air cushions and to generally facilitate the use of the stamp pad on a fiat surface. The provision, however, of the recess or recesses 5 is not essential in the present improvements and the pad functions ust as effectively with out such additional cushioning provision;

A flat base plate 6 of metal orother preferably rigid material is designed to he inserted within the continuous recess 3. The base plate is constructed of substantiallythe thickness and depth of the recess, and when inserted withinthe resilient base or frame member, serveslas. a rigid closure and padsupporting member fitting closely at all points against the inner walls of the recess or groove 3 entirely. around the periphery of the resilient. member 1. A pad member 7 is.

provided and may be of any well knownand desired construction. The overall dimensions of the pad member are substantially thesame as those of the aperture 2 of the base member as will be best seen in Fig. 3.

As illustrated the pad member comprises an inner filling 8"of felt or other ink absorbing material and a protective enclosing covering 9 of cloth or linen through which the ink contained within the filling may be transmitted to a stamp or article to beinked. Thepad member is further illustrated as having a lower reinforcing-plate 10 also of substantially the dimensions of the aperture 2, which plate may be of sheet metalto aid in maintaining and preserving the configuration of the pad memberof which fit constitutesa part. The pad member is providedwith a continuous peripheral shoulderll which cooperates with the inwardly projecting flange or shoulder 4 of the resilient base mem-- bertoimaintain the pad against vertical displacement after the elements have been assembled. i r

I Ifdesired the device may include a remov c able protecting slip cover 12 of sheet metal or other appropriate material and which when applied engages the marginal shoulder 1260 of the base member, as shown in: Figs. 2 and 5.

through the resilient member 1 together with theyieldable nature of the latter, permits the same to be easily distorted and stretched along-any portion of its periphery or radially fromits center to accommodatethe base Pl te 6 within the continuousrecess or groove 3 oft-he base member. W hen thev plate has been thus positioned the pad member projects unwardl throu h the un er uortioniof the central aperture 2'. and its shoulder 1 contacts beneath the inturned peripheral flange i of the base member to insure against furto be impressed thereon;

ther upwarddisplacement of the pad. The pad is now ready'for use'and affords a rigid and yet resilient inking surface for a stamp The pressure of a. stamp on theupper surfs o of the pad results in the member 1 being iorced angularly in-V vardly to more firmly grip the pad due to the cooperation and relation therewith of the rigid base plate 6. c.

The arrangement is such that when as sembled, a V shaped marginal recess or "chant ber is formed between the padinember and the shoulder 4 of the base member. I Any surplus'of inkexuchng from the freshglyinked pad Will collect inthis Vgshaped recess, without accumulating on the top surface of the resilient 'member l,'and from said recess the surplus ink is absorbed by the pad and again distributed to'the upper surface thereof.

a In Fig. the described marginal. recess is made morep'ronounce'd by eXtending the interior wall of the flange or shoulder 4 upward to above the'top surface of the pad member 8. In this figure the V-shaped marginal recess is shown at da and the clearance between thetop of the base member and the'top of the pad'isindicated at 46. V

The operation of dismantling the pad is just as simple and is accomplishedby merely stretching or distorting outwardly thewalls the resilient portion 1 to release the base plated from the retainingrec'ess orgroove 3 to permit its removal Jwith thefpad through the bottom of th e'aperture'2. f

, The construction described resiiltsin'the ink-applying member supported by said. plate and maintained against upward" displacement bysaid continuous fiange and a marginal recess providedbetween said continuous flange of the frame and said ink-applying member for collecting surplus ink and redistributing it to said ink-applying member. r

2. In a stamp pad the 'conibination of a radially stretchable frame open 'fronrtop to bottom, said frame having a groove in its inner periphery,the uppe'r portion of said frame having inwardly extendingrfiange, a pad-supporting plate in said groove,- and a pad held on said plate and under said flange.

3. A resilient and radially stretchable frame for inking pads open from'top to hottom and having on its inner face a groove for a the reception and holding of an element of an inking pad.

V 4. A resilient and radially stretchable frame for inking pads open from top to bottom and having on its inner face a groove and an inwardly extending flange spaced vertically therefrom said groove and flange being adapted to hold therebetween the elements of an inking pad.

In testimony whereof, I aflix my signature.

EMANUEL BAUMGARTEN.

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