US1708687A

US1708687A - Plate and die holder for embossing machines

Info

Publication number: US1708687A
Application number: US237404A
Authority: US
Inventors: Englebert A Bartel
Original assignee: P W DEVICE CORP
Current assignee: P W DEVICE CORP; P-W DEVICE Corp
Priority date: 1927-12-03
Filing date: 1927-12-03
Publication date: 1929-04-09
Anticipated expiration: 1946-04-09

Description

April 9, 1929. E. A. BARTEL. 1,708,637

PLATE AND DIE HOLDER FOR nmaossme MACHINES Filed Dec. 5, 192

I SI/ 22 Q5 1 WW T w w: INVENTOR 4 E Q: J LCQB 19 Enylelwrt A. wt,

Z0 Z0 ATTORNEY Patented Apr. 9, 1929.

UNITED STATES PATENT OFFICE.

ENGLEBERT A. BARTEL, OF BROOKLYN, NEW YORK, ASSIGNOR TO P-W DEVICE COR- PORATION, OFBROOKLYIEI, NEW YORK, A CORPORATION OF NEW YORK.

PLATE AND DIE HOLDER FOB EMBOSSING MACHINES.

Application filed December 3, 1927. Serial No. 237,404.

This invention relates to embossing ma chines using engraved dies and plates in genoral and more especially to the holders for dies and plates. 7

Among the objects of the present invention' it is aimed to provide a holder for engraved copper or steel plates, dies and the like for use in printing machines such as embossing machines, by means of which holder 1 the plate or die can with facility be secured in place and be readily adjusted both laterally and longitudinally relative to the counter and ink roll lifting cams.

The present invention further aims to provide a holder that can be readily adapted to i a standard embossing machine of the type today used for printing from engraved steel and copper plates and the like. 1

These and other features, capabilities and advantages of the invention will appear from the subjoined detail description of one specific embodiment thereof illustrated in the accompanying drawings, .in which Figure 1 is a plan of the improved plate holder Fig. 2 is a section on the line 2-2 of Fig. 1; and Fig. 3 is a schematic view showing the position of the engraved plate relative to the plate holder, counter and inking rolls, with a part of the counter and counter holder in section spaced from and disposed above theplate holder and path of movement of the inking roller. I

In the embodiment illustratechthe supporting plate 1 indicatesthc standard supporting plate of an embossing machine which is provided with achannel 2' in which is located the threaded portion 8 of the screw 4! The 4.0 screw 4 is generally providedwith a key receiving nut 5 at its end adjacent tov which there is formed a shoulder 6 which is spaced from the collar 7 a distance equal to the anchoring bar 8 through which the neck 9 of the screw 4 extends, and which anchoring bar 8 is secured to'the end of the supporting plate 1 for the work.

The threaded portion 3 is preferably a right hand thread, as shown, cooperating with the to internallythreaded portion 10 of the lug 11 traveling in the channel 2 and extending from the bottom ofthe'main plate portion 12 of theplate holder. On the main plate portion 12 the engraved plate or die is positioned, and r by means of the cooperation of the screw/t with the lug 11, the position of the engraved portion on the engraved plate P, illustrated by the dash and dot linein Figs. 1 and 2, is adjusted longitudinally relative to the counter 13 on the counter holder 14, see Fig. 3, also the ink roll lifting cams and also the space S, S, betweenthe pairs of ink

roll httmg cams

15, 16, and 17, 18, respectively.

In the standard form of machine, the ink roll lifting cams are longitudinally adjustable, having the slots 19 and being secured to the lateral edges of the supporting plate 1 by means of the screws 20. The-ink roll lifting cams heretofore have been supported laterally adjustable in order that the spaces S, S, may register with the engraved portion on the engraved plate and also register with the counter on thecounter holder. In the present instance, the adjustable feature of the ink roll lifting cams in most cases may be dispensed with since its adjustable feature is now taken care of by the cooperation of the screw a with the lug 11. The advantage of this one-point adjustment, to wit the adjustment of a single screw 4 as compared to the former adjustment of the four screws 20,

is of course obvious. The adjustable element of the ink roll lifting cams of course also serves to rovide a greater or less inking space S, to accord with the engraved area on the engraved plate P. For this purpose the adjustable feature of the ink roll lifting cams is of course retained.

Since the main plate portion 12, in the present instance, is considerably larger than the supporting plate generally provided with the embossing machine, it is preferable, as illustrated, to provide lifting cams which extend well beyond the front edge 21 and the rear edge 22 of the plate portion 12 so that the'inking roll can in no way engage any portion of the plate portion 12 except the engraved portion ofthe plate Pintended to be inked. Successive positions of the inking roll 23 are indicated in Fig. 3 by the dash and dot positions 23, 23 and 23.

For anchoring the engraved plate P in position on the main plate portion 12, the construction now to be described is provided:

The main plate portion 12 is provided with a cylindrical channel 24which extends the full length of the plate portion 12 from the edge 21 to the edge 22. This channel24, is provided Witha diminished slot 25 emergentending longitudinally of plate por tion 12.; In the channel 24 there entends the screwthreaded portion 26 of the screw 27,

which screw threaded portion 26 is left handed and cooperates with the internally threaded portion ofthe cylindrical member,

28, preferably composed of suitably heattreated tool steel, which has radially extend-- ingtherefrom a spur-like element 29 which travels'in the slot 25, therear face of which is preferably sl ghtly undercut to form, an

I acuteanglewith the periphery of the cylindrical portion 28 so that its upper rear edge may constitute a gripping plate engaging edge when engaging the front edge of the engraved plate 1?, see Figsland 2. 1

or operatingthe screw 27 knurledhandle po -rtion30 is provided. To anchor the screw 27in the plate portion 12 it is provided 'with a collar 31 which is located in the slot formed by the recesses 32 and 33 of the coinplemental sections 34 and 35 respectively,

The sections 34 ant 35arepreterably screwed to the front edge 21 of the plate portion 12 by; means ol 'the

screws

36, 36, and 37', 37, respec- 25 f The rearend of'the channel 2 lis preterablycl'osed-by tliescrew member 38 to bar the entrance of ink and nd.

The presentinvention also aims to provide afthree-point contact-for the engraved plate P in order tofacilitatelateral adjustment of the like through such rear the same, and the ready andexpeditiousan-i vchoring rof the plate P inadjusted position.-

' "Thethree-point locking contact includes the spur 29 andthe-two

abutment members

39 and 40. The abutmentmembers 39 and l0 are preferably composed of suitablyheat-treated tool steel. In the present instance, the plate port-ion12 is providedzwith the recesses 41 and 42' to receivethe abutment members 39 and respectively. The'abutment members 39 and 4E0yar'erprovided with upwardly ex- ;t'ei'iding ledges {t3 which haveiorward faces 4 4lslightlyundercutto form a gripping sur- 7 face at the upper edge of the abutment members,land rearrounded portionst5 which ex i tend from the faces 4 to the rear lower faces i V ,platethereby distorted. y

I Y I "and 4-0 otcomparativel-y short contac-t'taee 6 the plate locking function is in no wayim of the abutment members39,40. The abut ment members 39, i0, are preferably secured tothe plate portion 12 by. means of screws 1 such'asscre'w 46 illustrated in Fig. 2. The narrow slot 25 is sonarrow thatthe en- 'graved plate P, whichis generallycomposed of very thin stock about nineteen gauge, will .ri'gidlyspan such slot 25 and not bet-distorted I when subjectedyto the pr nt ng impress... In

otherwords; it has been found'thatwhen this slot i-snot extremely narrow, as illustrated, the print ng l 01361121131011 be pressed into 'su plate P will during the printing ch slot and the hen providing twofabutment members 39 being a channel extending said plate port1onandf-havingajna-rrow slot paired and at the sametinie a comparativelyv low priced construction provided which can be readily repairedat low cost.

By means of the spur 29 and the abutment members 39' and 40, it-is obvious that the lateral adjustment of theplate l? relative to the main plate portion l2'can be readily effect d by merely manipulating the screw member 2'? 1 to free the plate P and'thereupon move the plate P in contact with the edges 39 and l0 to the desired position, whereupon the screw will again be manipulated-tocause the spur .29 to anchor the platel? between it and the

abutment members

39 and 40.

It is of course understood that thesize of theengraved plateP illustrated, is merely indicative of one of the sizes Oll engraved plates that can be used with the present invention,.and that one of the features of the present invention resides int-he fact that it lends itself readily to accommodate itself to various sizes of engraved plates.

' nally of said supporting plate, :fi'xed jaw means on saidplate portion, a movable jaw means, and a second screw carried by said plate portion and operably associated with said movable jaw means to anchor the work .to saidplate portion between said fixed jaw means and said movable'jaw means.

2. The combination with the work supportingplate of an embossing machine, of a main screw operatively associated withsaid plate, a main plate portion operatively. connected to said main screw to be adjusted longitudi- .I,1ally of said supporting plate, fixed jaw means on said. plate portion, movable jaw I means adjustable longitudinally of said plate portion, and a second screw carried'by said plate "portion and operably associated with saidmovable jaw means to anchor-the work to saidplate portion between said fixed jaw means andsa-id movable jaw means and to facilitate adjustment of thework laterally of said plate portion. 7 v V 3. The combination with the work supporting plate ofan embossing screwoperatively associated with said plate, a main plate portion operatively connected to saidj main screw tobe adjusted longitudig nally of saidsupporting plate, fixed jaw means at one end of said plate portion, there longitudinally of extending'longitudinally ofsaid plate pormachine, of a main tion and emerging in the upper face of said plate portion, a second screw located in the channel of said plate portion, and a spur operatively associated with said second screw and extending through said slot to form a movable jaw means to cooperate with the fixed jaw means to anchor the Work to said plate portion and to permit lateral adjustment of the work relative to said plate portion.

4. The combination with the work supporting plate of an embossing machine, of a main screw operatively associated with said plate, a main plate portion operatively connected to said main screw to be adjusted longitudinally of said supporting plate, two gripping abutments spaced from one another and secured to said plate portion, there being a channel extending lon itudinall of said )late aortion, said channel having a narrow slot emerging in the face of said plate portion and extending in a line that extends between said gripping abutments, a second screw located in said channel, and a movable gripping member operatively associated with said second screw and extending through said slot to cooperate with the gripping abutments to anchor the work to said plate portion andto permit lateral adjustment of the work relative to said plate portion.

5. The combination with the work supporting plate otan embossing machine, of a main plate portion operatively connected to said supporting plate to be adjusted longitudinally of said supporting plate, two gripping abutments spaced from one another and secured to said plate portion, there being a channel extending longitudinally of said plate portion, said channel having a narrow slot emerging in the face of said plate portion and extending in a line that extends between said gripping abutments, a screw located in said channel, and a movable gripping member operatively associated with said screw and extending through said slot to cooperate with the gripping abutments to anchor the work to said plate portion and to permit lateral adjustment of the work relative to said plate portion.

6. The combination with an embossing machine having inking rolls, a holder for a counter, and a work supporting plate, of ink roll lifting cams adjustably connected to said supporting plate and cooperating with said inking rolls to permit inking only a predetermined portion of the work, a screw operatively associated with said supporting plate, a main plate portion, and anchoring means associated with said plate portion for anchoring the work to said plate portion, said plate portion being operatively connected to said screw to be adjusted longitudinally of said supporting plate to facilitate registering the work carried by said plate portion with the counter and inking space between said lifting cams.

ENGLEBERT A. BARTEL.