US1398076A - Marking-machine - Google Patents

Description

G. H. AND E. -L. LANG.

MARKING MACHINE APPLICATION FILED mm. 1921.

Patented Nov. 22, 1921.

3 SHEETS-SHEET 1- G. H. AND E. L. LANG.

MARKING MACHINE. APPLICATION FILED APR- 7. 1921.

1 ,398,076, Patented Nov. 22, 1921.

3 SHEETS-SHEET 2.

Inventors. George HLong.

ElmerLLcmg G. H. AND E. L. LANG.

MARKING MACHINE.

APPLICATION men APR. 1. 1921.

1,398,076, Patented Nov. 22, 1921.

3 SHEETS-SHEET 3.

Inventors. George H. Long UmerLLcmg A T Tys.

UNITED STATES GEORGE E. LANG AND ELMER L. LANG. OF BOSTON,

MASSACHUSETTS.

MARKIN G-MACHIN E.

Specification 01" Letters Patent.

Patented Nov. 22, 1921.

Application filed April 7, 1921. Serial No. 459,287.

To all whom it may concern:

Be it known that we, GEORGE H. LANG and ELMER L. LANG, citizens of the United States, and residents of Boston, county of Sufiolk, State of Massachusetts, have invented an Improvement in Marking-Machines, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to marking machines such as are used for marking laundry, shoe linings and other similar articles and which comprise a platen or work support on which the work is placed, a verticallyreciprocating printing head carrying the type, and an inking roll arranged to be moved back and forth across the typeto ink the latter at each reciprocation of the printing head.

The objects of the present invention are to provide an improved inking mechanism for inkin the type having the features which vwil be more fully hereinafter set forth.

In order to give an understanding of the invention, we have illustrated in the drawings a selected embodiment thereof which will now be described, after which the novel features will be pointed out in the appended claims.

In the drawings, Figure 1 is a side view of a printing head embodying our invention; Fig. 2 is a section on the line 2-2, Fig. 1; Fig. 3 is a section on the line 33, Fig. 2; Fig. 4 is a section on the line l-t, Fig. 2. Fig; 5 is a section on the line 5-5, Fig. 1.

Fig; 6 is a fragmentary side view showing an ink reservoir for supplying ink to the distributing roll,

Fig. 7 is a plan view ofthe ink reservoir and distributing roll.

Fig. 8 is a section on the line 8-8, Fig. 7.

In the machine herein shown 1 indicates a frame which carries a work support or platen 2 and which is also provided with an overhanging arm or head 3 in which is mounted for reciprocation a plunger 4 carrying the printing head 5. The printing head is shown as provided with type 6 for making. the printed impression. The vertical reciprocation of the plunger 4 moves it toward and from the platen 2 as usual in devices of this sort. Said plunger may be given its vertical movement in any suitable way. We have herein shown a plunger operated by a toggle lever device 7 which is connected by a link 8 to an eccentric on a shaft 9. Said shaft 9 is. driven from the driving shaft 10 by means of suitable gearing 11. The parts thus far described are or may be all. as usual in marking machines of this type and constitute no part of our present invention.

The type 6 is inked by means of an inking roll 12 which is carried in two connected arms 13 that are pivotally mounted at 14 upon two uprights 15 that rise from the printing head 5. One of the arms 13 has a link 16 pivotally connected thereto at 17, said link being also pivotally connected to the frame at 18. By means of this construction the upward movement of the print ing head will cause the arms 13 to be swung forwardly thereby to carry the inking roll across the face of the type, as shown by dotted lines Fig. 1, and the downward movement of the printing head will cause the arms to swing backwardly into the position shown in Fig. 1.

In order to evenly ink the type 6 it is desirable that the inking roll should roll across the face of the type under uniform pressure. The arms 13 have a swinging motion about the pivot 14, and hence the ink roll would naturally travel in the arc of a circle. The face of the type 6, however, is in a plane, and to provide for the ink roll 12 moving across the face of the type in a straight line rather than in a curve, we have provided a novel method of guiding the ink roll during the time that it is moving across the face of the type. The arms 13 are provided at their upper ends with slots 19 in. which the pivot studs 14: are received, said slots allowing a vertical movement of the arms 13. A spring 20 is placed in each slot, each spring acting against one end of the slot and against the trunnion or pivot 14. Said springs. therefore, will yieldingly hold the arms 13 in their elevated position, but will allow them to give slightly in a downward direction. Each arm is provided with a roll 21 which is adapted to travel over a track or guide 22 carried by the side of the printing head. This guide 22 has a curved por tion 23 at one end, the remainder of the guide being straight and parallel with the .face of the type 6. As the arms 13 swing from their full line position, Fig. 1, to the dotted line position, the rolls 21 will travel over the track 22 and said track will, there:

fore, cause the ink roll to travel in a straight line while it is moving over the face of the type, and the type will, therefore, be uniformly inked. The springs 20 permit this change of direction of movement of the ink roll from the circular to the straight line as determined by the track 22.

Ne have provided herein means for adjusting the rolls 21 vertically thereby to determine the pressure with which the ink roll will bear against the type. This vertical adjustment also permits type of different heights to be used. The rolls 21 are shown as mounted on spindles 24 which are carried in cylindrical supports 25 that are rotatably mounted in the arms 13. The spindles 24 are situated eccentrically of the supports 25 so that when said supports are turned the spindles 24 will be moved to adjust the rolls 21 up or down. Eachsupport 25 is provided with a knurled head 26 by which it may be turned, and it is also provided with a notched collar 27 which cooperates with a spring-pressed pawl 28 pivoted to one of the arms at 29 and acted on by a spring 30. This pawl 23 serves to lock the support in its adjusted position. b 7

Another feature of our invention relates to the manner of supplying ink to the inking roll 12. This is done by means of a positively-driven ink-supplying roll 31 which is situated so that the ink roll 12 is brought into contact therewith when the arms 13 are in the rearward limit of their stroke. This distributing roll 31 is shown as loosely mounted on a spindle 32 which is journaled in a bracket 33 carried by the frame 1. The roll 31 is provided with an axial aperture 34 which is larger than the spindle 32 so that said roll canmove radially relative to the spindle. The spindle 32 is positively driven and the roll 31 is coupled thereto so that the roll is also positively rotated. For thus driving the spindle 32 the latter is provided with a pulley 35 which is belted by a transmission belt 36 to a pulley 37 on the shaft 9. For coupling the loosely-mounted roll 31 to the spindle, we provide the latter near one end with a transversely-extending pin 38, see Fig. 4, the ends of which are loosely received in apertures 39 formed in the hub 40 extending from one end of'the roll31. This provides the desired positive driving connection, but at the same time allows the roll 31 to have its movement relative to the spindle. The object of loosely mounting the roll on the spindle is to prolong the time of contact between the, inking roll 12 and the distributing roll when the arms 13 swing backwardly. As the arms 13 approach the rearward limit of their movement the inking roll 12 will be broughtinto contact with the ink-distributing roll31, and during the final backward movement of said arms 13, the pressure of the inkroll 12 against the distributing roll will lift t .e distributing roll slightly because of the looseness with which it is mounted on the spindle. The ink roll, however, is, being positively driven, but since it is yieldingly supported, the length of time with which it is permitted to contact with the ink roll 12 is prolonged. The ink roll 12 is mounted so that it can freely rotate, and during the time that it is in contact with the ink-distributing roll, it will be rotated by the latter and will thus be thoroughly and uniformly supplied with ink.

in Figs. 6, 7 and 8 we have illustrated an ink reservoir for supplying ink to the distributing roll 31. Such ink reservoir is shown at 59 and it is supported on the bracket 33 in which the spindle 32 for the distributing roll 31 is journaled. This ink reservoir has an opening 41 at one edge and which receives a wick 40 which extends through the opening and bears against the roll 31. The wick is adjusted by means of a toothed wheel 42 carried on a shaft journaled in the reservoir and is provided with a thumb wheel 43 by which it may be adjusted. The toothed wheel 42 engages the wick so that the turning of the wheel will adjust the wick back and forth. 7

We claim: l

1. In a marking machine, the combination with a work support, of a vertically-movable printing head, arms rising from the printing head, an ink roll carrier pivotally connected to said arms, an ink roll mounted in said carrier, means to swing the carrier to carry the ink roll across the face of the type supported by the printing head, and means associated with the printing head to cause said ink roll to have a right line movement while it is passing over the type face.

2. In a marking machine, the combination with a platen or work support, of a vertically-movable printing head carrying type, arms rising therefrom, a carrier pivoted to said arms, an ink roll mounted in said carrier. means to swing the carrier as the printing head reciprocates, guides associated with the printing head, and rolls adjustably mounted on the carrier and cooperating with said guide-to control the movement of the inking roll as it is moving across the type.

3. In a marking machine, the combination with a vertically-movable printing head carrying type, of a pivotally-mounted inking roll carrier, an inking .roll loosely mounted therein, a positively-driven ink-distributing roll, and means to swing the carrier to carry the inking roll into contact with said-inkdistributingroll and then across the face of the type.

4. In a marking machine, the combination with a vertically-movable printing head carrying type, of a pivotally-mounted inking r011 carrier, an inking roll rotatably mounted therein, a .positivelvdriven but yield 0 ingly-monnted ink-distributing roll, and means to swing the carrier to carry the inking roll into contact with said ink-distributing roll and then across the face of the type.

5. In a marking machine, the combination with a vertically-movable printing head carrying type, of a pivotally-mountect inking r011 carrier, an inking r011 i'otatabiy mounted therein, a positively-driven but yieldingly-mounted ink-distributing r011, means to swing the carrier to carry the inking roll into contact with said ink-distributing roll and then across the face of the type, an lnk reservoir having an opening, and a WlOk within the reservoir which projects through 15 GEORGE I-I. LANG. ELMER L. LANG.

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