US1604787A - Stenciling machine - Google Patents

Description

Patentecl Oct. 26, 1926.

erinran starts 1,604,787 TFFEQE.

cirnnnns G. nos'mvriannn, or BiiooKLYiv, NEW YORK, AssIGivoR ro unnn'nvvoon TYPEWRITER COMPANY, or NEW Yo'n'ir, iv. Y., A ooitroRArion or DELAWAR'E.

'srniioiiiiiie MACHINE.

Application fileid December 6, 1924. Serial No. 754,292.

T-his invention i'elatesflto stenciling inachines, and more particularly to mainiallyoperable ink-distribut'ing means for t'he stencil-cylinder.

In rotary stencil'ng inachines it is coinmon to apply ink to the interior of the stencil-cylinder, the exterior of Which is usually Wrapped With an ink-pad, and overlaid With a stencil-sheet. The ink is wcistri-buted by brushing it around the interior surface of the cylinder-Wall and inte the foraminations, this 1operation being 'more oiless inconvenient and likely -to result in soili-ng of tlie operatorls hands, as Well as the external parts of the machine or Working materialspdue to *the necessity of handling the ink-container :and ink-distributing iinplement, usually a brush.

The primary feature lof this inventio'n -is to enable an independent ink-distributing impleinent designed for hand-manipulation in the conventional inanner Ato be supported upon a station'ary stud-Shaft or protection Within the stenciling cylinder during operation of the machine, and easily and quickly removed bodily from its support foruse.

A further fet ture is to enable the ink to be supplied to the interior of the cylinder from an external source by means lof a hollow stud-shaft Which may constitute the station'ary support for the rot-'atable icylinder at one end, the ink-distri'buting brush being constructed so that it is supportable i on the ho'lloiv stud-shaft in telescopic rela- Ulf ' tionship over the outer end thereof.

A still further feature is to simplify and improve the construction of'hand-manipulable brushes for ink-distribution 'and other purposes;ito enable easy disassembly tof the parts thereof for purposes of cleaning, replacement, adjustinent or repair, 'and to afford provision for supporting the brush When not in use.

Other features and advantages Will herew inafter appear.

In the accompanying drawings,

Figure 1 is a side elevatio'n, p'artly in section, of a conventional type-stenciling nia'- chine, With the present invention applied thereto, the ink-distributing brush being supported. iii its inoperative position.

Figure 2 is a partial end view through the openI end of the stenciling cylinder shown in Figure l. par'tly in section.

Figure 3 is a perspective disassembiy view, showing the ink-distributing br'ush With the bristle-'carrying head removed secured, as by the screw 13, Within a collar 14 forming part of a frame standard 15 uprising from the 'machine base 16, the lopposite end of the cylinder beiiig lopen and having a rim 17 supported upon rollers 18 mounted in a yoke-frame kstandard 19, also up'standing from the base 16, a rotating handle 20 being Secured to the cylinder 'at the open'end. The cylinder-Wall in this ins'ta'nce has the usualouter ink-blanket 21, the rolled ends 22 of Which are securable in a longitudinal groove 23 by means of a clain-p 24, 'and the cylinder is co-o'perable With a pressure roller 25 having opposite shaft-ends 26 journaled in bearing's 27 provided at the sides of the frame-standards 15 and 19. The hub 28 of the spi'der 11 is formed With an annular groove 29 co-'operable With the depending toe 30 of a springheld latch 31-, pivoted at 32 on the framestandard 15, to hold the cylinder against lateral movement on the stud-shaft 12 during operation of the machine, and to permit renioval of the cylinder When desired.

AccordingI to the present invention, means are provided for mourrting the ink-distributing implement upon a stationary shaft or projection Within the cylinder. and for this purpose the stationarv stud-shaft 12 projects partly into the interior of the cylinder, as seen at 33, and affords a means of support for a manually-inanipulable brush 34. The brush 34 V preferably includes a shell or hol-der 35 having an integral handle 36 of conventional elongated form, Which may be knurled on its outer surface as seen at 37, and a removable head 38 having bristles 39. The head 38 has an upstandng longitudinal rib 40 With a semi- 'cylindrical groove 41 formed in its upper et 55 secured to the frame-standard 15.

direrted inwardly from the outer end of the head 38, parallel With the iongitudinal axis of the handle 36, and substantially conformable to the outer configuration of the projecting portion So of the shaft 12, so that the brush may fit' more or less snugly over the projecting end of the stud-shaft 19 practieally enclosing' the same in telescoping relationship, and be thus supported on the stud-shaft when not in use.

* The liJristle-carrying head 38 is insertable into and removable from the shell 35, the opposite sides of the shell for this purpose being inturned to provide opposite longitudinal channels 116 co-operable with longitudinal ang'ular guiding Webs or extensions 47 projecting from opposite sides of the head 88 above the bristle-bearing portion, and the internal walls of the groove 4-3 of the shell 35 preferably exaend from the complementary groove 42 to the plane of the top surfaccs of the webs 47, so that the longitudinal groove receives the rib The head 38 is thus slidable into the sheil and in this instance is secured in place by means of thumb-screivs 48 which extend through lugs 49 formed on the opposite lower side portions 45 and engage the edges of the webs 47. rThe head 38 may also be adjustably secured at different positions within the shell 35, so that the head projects beyond the end of the shell, thus faciiita'ting its use in confined or restricted spaces, while, at the same tiiiie,'inci'easi1ig the effective length of the brush. The head may also be reversed, end for end, when the bristles at either end become worn to excess, and, when necessary, a new head may be substituted.

The brush may be otherwise constructed, but one essential feature of the invention, however, is the provision of the -axial bore or opening' ett to telescope over the stationary support, which in this instance is the stud-shaft 12. V f

The' shell 35 may be provided With an enlarged end or shoulder to take the Shock and wear incident to frequent, and possibly at times forcible, replacement of the brush on the stud-shaft 12 in abutting relation against the hub 28 of the spider 11.

The stud-shaft 12 in this instance is hollow, bei ng formed with an axial bore 50 having communication at one end, by means of a tonnecting nipple 51, with the base 52 of a planger-cylinder 53 provided in an inkfountain or reservoir 54: mounted on a brackxplunger 56, normally resiliently held in inoperative position, as by a spring 57, is depressible by means of an external operating head or knob 58 to force a charge of ink, Which normally settles in the bore 50, through the opposite end of the bore 50, where communicationis aii'orded to the eX- terior of the stud-shaft through a cross port 59, passage through the cross port 59being controlled by suitable means, as, for instance, a ball-valve 60 located in a coextensive larger diameter portion 61 of the bore 50. rilhe ball-valve 60 is held to its seat 62 to close ofi the end of the bore 50, and normally restrain flow of ink through the cross port 59 by resilient means, preferably in the form of a coil-spring 63 held against the ball by a plug 1541 which seals the outer end of the enlarged diameter bore 63, the plug 6-1 being threadable in the enlarged diameter bore 63, -and thus sei-Ving to regulate the spring-pressure imposable on the ball-va ve, the pressure being preferably of such degree as to be overcome by the force of the charge of ink displaced by the plunger 56, and permit the ball-valve to be unseated, yet suflicient to normally seal the bore 50. Details of'tlie ink-reservoir referred to are more fully set forth in the co-pending application of Linden A. Thatcher, Serial No. 739,473, filed September 24th, 1924-. i

In the operation of inking the cylinder, the brush is grasped by the handle 36, and removed from the stud-shaft 12 by clrawing it outwardly. The knob 58 of the ink-expelling mechanism is then depressed to cause a charge of ink to be deposited on the interior cylinder-nell, or directly onto the bristles, as may be desired, and the brush is manipulated in the customary manner to (flistribute the ink, after which the brush is replaced on the stud-shaft 12, where it may remain stationary and out of the way of the operator during operation of the machine.

Wlith the above construction there is no necessity for the operator to come in contact with the ink, and the brush is always ready for use, the stud-shaft 12 acting as a combined cylinder-support, brush-holder and ink-supply conduit. Wlhen the brush is in position on the shaft the brush also functions as a cap or closure, so that no ink may leak through the cross port 59, and the work is thus not likely to be marred through undesirable leakage doposits of ink at any part of the cylinder-wall. Similarly, by enclosing the projecting end of the stud-shaft, the brush matcrially assists in preventing the ink at the cross port 59 from drying up and clogging the port, or causing the ball-valve to stick.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim:

1. The combination with a rotatable stenoil-cylinder, of an interior central stud provjecting from one end of the cylinder, and a bodily removable ink-distributing implement normally supportable on said stud.

Leo/ms? .a cylinder, a shaft projecting into said cylinder for supporting the cylinder at one of its ends, and an ink-distributing brush telescopically7 supportable upon the projecting portion of said shaft, said brush being lbodily removable from said shaft for manipulation independently ther'cof. p

5. In a stenciling machine, the combination with a rotatable cylinder, of a fixed stud on which the cylinder rotates, said stud having an opening therein, an ink-reservoir in communication with said opening, and an ink-brush normally supportable on saidstud,

over said opening and removable to expose said opening.

6. The combination with a stenciling machine including a rotatable cylinder, an inkreservoir, and an ink-brush, 'of a central hollow stud afording support for the cylinder, passage for the ink and support for the brush, said brush being bodily removable for operation independently of its support.

7. The combination with a stencil-cylinder mounted for rotation about a shaft extending only partly thereinto, of an ink-brush mountable on said shaft and bodily removable therefrom for independent manipulation, said brush including a handle, a shell and a removable bristle-carryng member.

8. The combination with a stenciling machine including a rotatable cylinder and an external ink-reservoir, of an ink-brush including a shell and a removable bristle-head, means for guiding and supportingsaid head within said shell, means affording an elongated opening between said head and shell,

and a central hollow stud affording support for the cylinder, passage for the ink and support for the brush, said stud being receivable in said elongated opening to support the brush. and said brushibeing bodily removable from its support and manipulable independently thereof. i

9. The combination with a stencil-cylinder mounted for rotation about a shaft eX- tendino; only part way thereinto, of an independently operable ink-brush includingl a shell and a removable bristle-carrying menand means for guiding the bristle-carrying member within the shell, said bristlecarrying member land shell having complementary grooves affording an opening in Which the end of said shaft is receivable to removably support the brush on the shaft.

10. In a stenciling machine, in combinaber,

tion, a cylinder, a shaft projecting into' said i cylinder for supporting the cylinder at one of its ends, and an ink-distributing brush including a. handle, a shell and a bristlecarrying member removably Secured in said shell, said shell and bristle-carrying member having complementary grooves defining an opening to receive said shaftand telescopically support the brush upon the projecting end of said shaft. i

ll. In a. stenciling' machine, in combination, a cylinder, a shaft projecting into and affording support for said cylinder at one end, and an ink-distributing brush having co-operative members between which said shaft is receivable to support said brush in bodily removable relationship.

12. ln a vstenciling machine, theV combination with a rotatable cylinder, of a' fiXed' stud on which the c Ylinder rotates said stud 5 havin1 an inkassao'e an ink-reservoir in b p b 7 communication with said ink-passage, and] an Vink-brush including a grasping handle, a shell and a bristle-head, said shell4 and bristle-head affording complementary provision to' receive said stud tov normally sup-.

port the brush over said-ink-passage and to permit bodily removal of the brush vto expose said ink-passage 13. An ink-brush and the like compris-v ing a handle, a shell or body and' a removable bristle-head, longitudinal guiding means co-operative between said head and said shell, and means for securing said head in position within said shell, said head and said shell having complementary grooves affording an elongated opening Vto receive a supporting stud.

14. An ink-brush and the like comprising body, a handle and a removable bristlehead having guiding webs at opposite sides and a guiding rib between said webs, said body having grooved portions co-operable with said webs4 and rib to position the bristle-head within said body, and means for securing the bristle-head in place.

' lbAn ink-brush and the like comprising a body, a handle and a removable bristlehead having guidingl webs at opposite sides and a guiding rib between said webs, said body having grooved portions co-operable with' saidwebs and rib to position the bristlehead within saidbody, and means' for securing the bristle-head in place, said bristlehead being reversible end for end.

CHARLES G. ROSENHAER

Images