US1516528A

US1516528A - Marking machine

Info

Publication number: US1516528A
Application number: US399017A
Authority: US
Inventors: Perley R Glass
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1920-07-26
Filing date: 1920-07-26
Publication date: 1924-11-25
Anticipated expiration: 1941-11-25

Description

Nov. 25, 1924.

P. R. GLASS MARKING momma:

Original Filed July 0 "n94 Z 32 f 16 136 9 E4 14% i Q X I l 174 J- "4 I 176 55 2'6 1 I 156 L10 Nov. 25, I924.

P. R. GLASS MARKING MACHINE 1920 2 Sheets-Sheet 2 Original Filed July 26.

WWI/V717? Patented Nov. 25, I924.

i F l IPERLEY R. GLASS, OF WAYLAN'D, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MA- CHINERY CORPORATION, OF PATERSON, NEVT JERSEY, A CORPORATION OF NEW FER-S EY.

App lication filed Ju1y 26, 1920, Serial No. 399,017.

To all whom it may concern:

Be it known that I, Pnnnnr It. GLAss, a citizen of the U ited States, residing at Wayland, in the county of Middlesex and 5 State of Massachusetts, have invented certain Improvements in Marking Machines, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to marking machines and the illustrated embodiment is of a character which adapts it more especially for use in marking or numbering successively a series of sheets, pages or any comparatively thin articles, as for instance parts of shoes.

An object of the invention is to provide an improved form of marker which can be readily actuated, for instance, to mark sizes and half-sizes, preferably consecutively.

In the illustrated construction, a size wheel with consecutive characters is mounted ad jacent to a half-size wheel having a series of half-size characters all alike and spaced apart to provide alternate blank spaces so that the successive actuations of the half-.

Another object is to provide an improved form of work support of that character in which a'pile of pieces, as shoe parts, are successively marked as they are arranged one by one on the support. In the preferred embodiment, the work support is} movably mounted in a. casing and means is provided to engage the work support within the casing to lock the support against vertical movement between successive actuations of a marking member and to prevent rotation of the support at any time. It will be apparent, however, that in many aspects, the invention is not limited to the marking of piled up pieces.

Another object of the invention is to provide an improved setting m chanism for selecting the desired characters, one feature consecutively brought to position as desired.

MARKING MACHINE.

Renewed June 14, 1923.

of which is that the mechanism will not be injuriously affected in any of its parts by too direct or too long contact with a heat ing unit, the latter being employed when it is desired to burn the characters in the material. In' the illustrated]embodiment,

the setting members are movably mounted independently of the impression members and are designed to engage the latter only during the selecting of the characters. Another feature of this construction is that the weight of the marking head is'reduced and is more easily actuated than would be the case were the setting members carried by the marking head.

Another object is to provide improved actuating mechanism for the marking head. In the preferred embodiment, the head is given an intermittent movement and during one dwell, the ink may be applied and during another dwell, the head may remain in engagement with the work for an appreciable interval to produce a better impression.

These and other features of the invention will appear from the following description and accompanying drawings of a preferred embodiment of the invention and the invention will then be particularly pointed out in the claims.

Referring tothe drawings,,

Fig. 1 is a side elevation, partly broken awayv and partly. in section, of my marking machine as a whole;

Fig. 2 is a detail side elevation of the cam lever and its actuating cam;

Fig. 3 is a front elevation of the machine as a Whole, certain parts being omitted for the sake of clearness;

Fig. l is a section through the marking wheel spindle showing in side elevation one of the size marking wheels, together with its actuating mechanism;

Fig. 5 vis a similar view showing the unit size marker with its actuating mechanism Fig. 6 is a View similar to Fig. at indicating the half-size marker;

Fig. 7 is a section through the spindle o the setting device showing one of the setting members in side elevation.

The base of the machine is indicated at 10. From this base rise two cheek plates 12 58 mounted'in the frame.

having a series of bosses in which the operating shafts are journaled. Power is applied to a belt pulley 14 on the power shaft 16 and a suitable clutch normally held disengaged by a spring (not shown) may be ac tuated by the cam surface 18, attached to the treadle' rod 20, to engage the clutch. A coil spring 22 holds this rod'upwardly to allow the clutch spring to disengage the clutch. Secured to the rod 20 is a grooved collar 24 which is actuated by an arm 26 secured to the rockshaft 28. On one end of this rockshaft is secured by a split sleeve 30, an arm 32 carrying at its upper end a cam roll 34 which is actuated by the cam 36 on the shaft 38. Upon depression of the treadle, the clutch is engaged and during.

substantially one actuation of the marking head the cam 36 will engage the roller 34 and thus retain the clutch in engagement, but when the cam 36 approaches its original position, the coil spring 22 will restore the treadle rod 20 and cam surface 18 to a clutch releasing position and thus stop further rotation of the power shaft, a suitable brake being used if desired. This cam 36 is secured to the counter shaft 38 journaled in the framework and driven from the power shaft 16 by means of a pinion 42 engaging the large gear 40.

A marking head, indicated at 50, is secured by bolts to a plate 52 formed on acasting constituting the marking head carrier and composed of spaced bars 54 joined near their upper ends by a cross bar 55. This casting is bifurcated at the upper end, to receive pivotally, the end of a rocking lever 56 which lever is pivoted to the shaft Secured to the marking head carrier by tapering pins 61 is curved link 60, one end of the curved link being pivoted at 62 to the angle arm 64 of a cam lever 66. The cam lever 66 is pivoted to a shaft extending across the frame at '65 and the rear end of the cam lever is pivoted at 68 to a link 70 which is also pivotally secured at 72 to the rocking lever 56. The cam lever is slotted at and, on each side of the slot, are bearing plates 82 which are in engagement with a substantially triangular cam 84 so formed that it will hold the marking head stationary for a time, then lower it, hold it in this position for a sul stantial interval and then raise it. The cam rotates in a direction to act first between its shaft and the pivot 65 of the cam lever and lat-er acts on the far side of its shaft as the marking head is raised. Thus the greatest leverage is secured when most needed. The mechanism for actuating the marking head is so constructed that the head will be carried forwardly and downwardly, the movement being substantially in a vertical line as the work is reached.

The marking 111111l')61$ supported in the marking head may be of the kind which are heated in order that the impression members may burn the desired designation in the material or the marking members may consist of type disks to which ink is applied. I also contemplate using both ink and heating means for the type. If inked type is to be used, the following preferred mechanism is utilized to actuate the inking arm. Suspended from a pivot shaft is an oscillating link 92 carrying at its lower end a spring housing 94. Pivoted to this link at 96 is a bell crank lever 98 having at its forward end a rockshaft 100 to which the inking arm 102 is pivotally secured. Depending from the rockshaft- 100 is an arm 104 which is engaged by a coiled spring 106 carried in the housing 94 above referred to, and acting to press the inking arm upwardly against the type in a yielding manner. The pressure of the ink pad 110 may be adjusted by a screw 108 carried by the inking arm 102 and engaging a suitable abutment on the oscillating link 92. The motion of the inking arm is controlled by an oscillating arm 112 pivotally hung on the shaft 58 and carrying a cam roller 114 guided by the cam surface 116 formed in the side'of the large gear 40. This cam surface 116 is also provided with a small projection 118 the purpose of which will later appear.

The work, which will ordinarily be operated upon, consists of a series of thin pieces of material such, for instance, as parts of shoes. These pieces will be arranged preferably in a pile and fed to the work support one by one, being manipulated in a manner analogous to the turning of the pages of a book where the pages are allowed to slip past the thumb and finger one by one i for rapid turning. Thus, as the bottom piece is stamped with the desired mark, the next piece will be allowed to slip down to marking position, etc., until all the pieces in the pile have been marked, the work support, during this operation, gradually moving downward. It is therefore necessary that the work support be yieldingly supported to hold the work pieces to receive the series of impressions. Secured to the work support is a depending hollow sleeve 132 which is guided vertically in a cupshaped casing or guideway 134, this casing having an arm 136 which may be removably secured to the framework by pins 138 and a set screw 140. The sleeve 132 is provided with a longitudinal keyway 144 in which is inserted a combined friction block and key 146. The friction block or key passes through a slot in the casing to engage the keyway, thus to prevent rotation of the work support and also to hold the work support in the position to which itis forced by an impression on the work. To hold the work support yieldingly for the impression, a coiled spring is inserted in the casing and engages at its upper end the sleeve 132 and at its lower end a bushing 150. This bushing is threaded externally in the casing and can be rotated by a knurled head to adjust the tension of the spring and a suitable lock nut 152 may be provided to secure it in adjusted position. To limit the upward movement of the work support under the influence of the spring there is provided a slide rod 15-1 having an enlarged head 156 engaging the work support, the lower end of the rod passing downwardly through the sleeve 132, coiled spring 1 18 and bushing 150. Suitable stop nuts 158 threaded on the end of the rod serve to engage the knurled head on the bushing 150 and thus limit the upward movement o-fthe rod and work support.

In order to release the friction block and the work support at the time of an impression and to secure it immediately before and after the impression, there is provided the following preferred mechanism. Secured to a bracket on the casing at 160 is a lever having an upper arm 162 and a lower arm 16 1. In the upper arm is threaded an adjusting screw 166 which is movable to pro vide for wear and to cause proper contact with the friction block. The lower arm 164 is spring pressed away from the easing by means of an expansion spring 168 which is adjustable by means of a screw 170 to vary the pressure exerted by the screw 166 against the friction "block. To the upper end of the arm 162 is pivoted a link 172 having at its rearward end a lost motion slot 174 engaged by a pin 176 on the oscillating arm 112. This oscillating arm, during the actuation of the inking devices, will not affect the friction block because the pin 176 will slide idly in the slot 174. However, sometime after the pin 17 6 reaches the rearward end of the slot, the project tion 118, on the cam surface 116 above re ferred to, will cause a slight oscillation of the arm 11.2 to the rear and thus withdraw the screw 166 from engagement with the friction block, thus releasing the work support to receive a. yielding impression. The adjusting screw 166 may be moved toward the friction block to position the slot 171- in the link 172 fart-her to the rear in order to prevent the release of the work support when desired. The return of the arm 112 takes place immediately whereby the expansion spring 168 will again cause the friction block to lock the work support in the position to which it has been forced by the impression. Since the work support is self adjusting, the pieces can also be marked one by one in accordance with the opposite method of manipulation. that is, the pile of pieces may be laid on the support and the pieces removed one by one as they are marked, the spring, of course, gradually raising the support and the work to meet the impression member.

Mounted on a. hollow sleeve 182 in the marking head is a series of type disks or markers 180 which are provided preferably with series of characters such as case numbers, width and match marks and, within the hollow sleeve, may be inserted a heating unit, 18 1 whenever it is desired that the impression members should burn the impression in the material without the use of ink. iVhen ink is used, the heating unit may, of course, be removed and when the heating unit is used, the inking device may be disconnected from its actuating arm. The type disks are held in locked position by the usual series of spring pressed locking pawls 186 mounted on the marking head. Opposite this series of type disks is a series of setting members 188 consisting of a series of toothed disks which engage the type disks to rotate them for the purpose of selecting the characters. The setting disks are carried on the end of a depending rock arm 190 secured to a rock shaft 192 journaled in the framework. Extending rearwardly from the rock shaft is an actuating arm 19% pivotally joined to a suitable treadle rod 196, and, to holdthe setting members normally out of engagement with the type disks, a coiled spring 198 is provided, this spring engaging a suitable lug on the framework and a stop collar on the rod 196. Movement of the setting members in either direction is limited by the adjustable stop screws 200, 201 threaded in lugs on the framework. The setting members being normally held out of engagement with the type disks, there is no danger of unduly heating the setting members since the heating unit will not have sufficient time to heat them very much during selection of the characters. This is especially advantageous where the setting members are provided with springs which may have their temper drawn by excessive heat and it also avoids any binding of the parts due to unequal expansion. As herein shown, the setting members are rotated by a spindle 202 having a knurled head 203 and also having spri.ng-1:n'essed pins 20'? engaging in notches 205 on the setting members. Thus the rotation of the spindle will cause the rotation of any of those setting members which are not locked by the holding pawls 186.

For the purpose of marking sizes and halfsizes, the marking head has a suitable size wheel or marker 204 having around its periphery a series of characters preferably indicating consecutive sizes from 0 to 9 and disposed on one side of the size marker is another co-operating size marker 208 provided with a series of characters all of which are preferably alike and formed as a 1.

'vided with a series of half-size characters,

all having the designation It will be noted that the marker 208 and half-size marker 206 are provided with fewer characters than the size markers so that a wide blank space occurs after each character.

This double spacing enables the characters to be moved to a marking position and then beyond on alternate actuations. On the size marker 204 are ratchet teeth 210 which are disposed one at each type character, whereas the ratchet teeth 212 on the half-size marker 206 are placed opposite each half-size character and between adjacent half-size characters. The marker 208 is formed similarly with ratchet teeth 214 having the same relation to the characters as is disclosed on the half-size marker. In order to actuate the markers simultaneously or independently, there is provided the following preferred mechanismz' A finger piece 216 is carried on a lever pivoted on a bracket 222 of the marking head and this finger piece carries a spring-pressed pawl 224 to engage the ratchet teeth 210. Adjacent the half-size marker 206 and the marker 208 there are provided similarly supported

finger pieces

218 and 220 having spring-pressed

pawls

226 and 228 respectively to engage their cooperating ratchet teeth. The finger piece 216 lies immediately adjacent to the two

finger pieces

218 and 220 so that it is easily possible for the operator to place his finger in a position to cover the finger piece 216 and either of the

finger pieces

218, 220, and thus actuate two of them simultaneously. Any one of the finger pieces can also be actuated independently or all three together. This mechanism gives a very convenient method of marking the size and half-sizes consecutively. Assuming that the marker 208 is so set that the characters are not in a marking position and that the characters on the size marker 204 and half-size marker 206 are set to indicate size 5 for example, the operator will press the finger pieces 216' and 218 simultaneously, thus advancing the size character from 5 to 6 and throwing the half-size character be yond marking position. Then to mark size 6 the operator will press the finger piece 218 independently, thus bringing the next half-size character to a printing position without affecting the 6. When the work has thus been marked up to and including 9 the operator will actuate all three of the finger pieces simultaneously, thus advancing the size marker 204 from 9 to 0, the marker 208 from a blank space to 1. and the half-size marker 206 beyond marking position. Thereafter the size marker 204 and half-size marker are operated as before to continue the marking of the size and half-size characters.

Summarizing the operation as a whole, actuation of treadle connected to rod 196 causes the rock arm 190 to carry the setting members 188 into engagement with the discs having the case numbers, width and match marks. By releasing the proper locking pawls 186 and turning the spindle 202, the desired characters are selected and brought to marking position. Release of the treadle causes the spring 198 to remove the setting members from setting position and prevents the undue heating of the latter when the heating unit 184 is used. The desired size and half-size characters may then be selected by the finger pieces 216, 218,220 as described. Depression of the treadle rod 20 connects the power pulley to the shaft 16 to cause the actuation of the marking head. First the ink pad 110 is carried forwardly and upwardly against the type and is returned to its original position during a dwell of the marking head. The cam 84 then actuates the marking head, carrying it forwardly over the center of the work-support and downwardly into contact with the work on the support, the support being released, at the time of contact, from the friction block 146, this release being effected by I the cam projection 118, roller 114, arm 112, link 17 2 and lever 162. The work support thus adjusts itself for the impression, together with the sleeve'132 and rod 154 under the influence of the spring 148. The marking head remains in its lowest position for a short interval to produce a better impression and when heated type are used, a lower degree of heat will suffice. WVhen the marking head rises the work support is locked by the friction block 146 and spring 163 and the next piece of work may be arranged in readiness for marking. As long as the treadle is held depressed the marking head will continue to be actuated and when the treadle is released and the marking head reaches its raised position, the cam 36 allows the described mechanism to disengage the clutch.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a marking machine, a marker with a series of unlike characters, a half-size marker having a series of like characters, and means to advance both markers simultaneously or the half-size marker singly in the same direction.

2. In a marking machine, a marker with a series of unlike characters, a half-size marker having a series of like characters, and means, operating upon alternate actuations, to bring one of the like characters to marking position and then to carry all the like characters out of marking position with a simultaneous advance of an unlike character.

3. In a marking machine, a marker having a series of like characters, and means to rotate the marker to bring its like characters into marking position in rotation, intermediate actuations carrying the charac' ters out of marking position.

4. In a marking machine, a half-size marking wheel having a series of half-size characters spaced entirely around its peripher and means to rotate the wheel in one direction step-by-step to advance a character alternately to marking position and beyond.

5. In a marking machine, a half-size marker having a series of ha1f-size characters spaced about its periphery, and means to rotate the wheel step-by-step and operating upon alternate actuations to bring a character to marking position and then to carry all the characters out of marking position.

6. In a marking machine, a half-size marking wheel. having a series of half-size characters spaced about its periphery, ratchet teeth on the wheel at each character and between the characters, and means to engage the ratchet teeth to advance a character alternately to marking position and beyond.

7. In a marking machine, a marker with a number of consecutive characters and a half size marker having half as many halfsize characters all alike, ratchet teeth on the first marker one for each character, ratchet teeth on the half-size marker adjacent each character and between the characters, and means to engage the ratchet teeth to advance the first marker from one character to the next and to advance a half-size character beyond marking position.

8. In a marking machine, a pair of ratchet wheels, a marker secured to one ratchet wheel and having a series of consecutive characters, a half-size marker secured to the other ratchet wheel and having a half-size character opposite every alternate ratchet tooth, and means engaging the ratchet teeth to advance simultaneously the first marker from one character to the next and the halfsize character beyond marking position, said means allowing subsequent advance of the next half-size character singly to marking position.

9. In a marking machine, a size marker provided with a series of characters ar ranged in succession, a half-size marker adjacent to said size marker and having a series of half-size characters all alike, means to bring the characters on the size marker successively into marking position, a member operable on alternate actuations to advance a half-size character into marking position and operable on the intermediate actuation to advance the half-size character beyond the marking position.

10. In a marking machine, a size marker provided with a series of characters arranged in succession, a half-size marker adj acent to said size marker and having a series of half-size characters more widely spaced than the characters on the size marker, levers adjacent the markers and having adjacent finger pieces, ratchet teeth on the size marker corresponding in number with the characters, ratchet teeth on the half-size marker at each half-size character and between adjacent characters, and pawls carried by the levers and operable simultaneously by pressure on the adjacent finger pieces to advance a size character and throw the half-size character beyond marking position.

11. In a marking machine, a marker pro vided with successive characters, a second marker having a series of fractional characters all alike, and means alternately to ad vance both markers simultaneously and the second marker independently in the same direction to mark work pieces with sizes and fractions of sizes consecutively.

12. In a marking machine, a marker provided with a number of consecutive characters and a. half-size marker having a double spaced series of fractional characters, and means to advance the first marker from one character to the next and to advance the second marker the same distance to carry the fractional character beyond marking position, said means allowing subsequent further advance in the same direction of the next fractional character singly to marking position.

13. In a marking machine, a size vmarker provided with consecutive characters, an adjacent half-size marker provided with a series of double spaced half-size characters, a second size marker adjacent the first, and alined actuators constructed and arranged to actuate the first marker in co-operation with the others to mark sizes and half-sizes consecutively.

14. In a. marking machine, a size marker provided with consecutive characters, an ad jacent half-size marker provided with a series of half-size characters, a second size marker, a lever for actuating the first size marker and having a finger piece, levers for actuating the half-size marker and the second size marker, and having finger pieces adjacent the first mentioned finger piece whereby the half-size marker'and the second size marker can be operated in co-operation with the first size marker to mark sizes and half-sizes consecutively.

15. In a marking machine, a movable impression member, a work support having a grooved sleeve, a casing in which the sleeve is movable during the impression, and a block to engage the groove of the sleeve Within the casing to lock the work support against rotation.

16. In a marking machine, a movable impression member, a work support, a casing in which the work support moves, a friction block operable through the casing to engage the work support, and a spring pressed lever having means to engage the block to lock the work support.

17. In a'marking machine, a movable impression member, a movable work support having a sleeve, a spring within the sleeve to sustain the work support, a guideway for the sleeve, and means to engage the sleeve to hold the work support between successive impressions. v

18. In a marking machine, a. movable impression member, a Work support having a sleeve, a casing'to enclose the sleeve and a fri tion block operable through the casing to hold the work support against rotation at all times and to hold the work support be tween successive impressions.

v 19. In a marking machine, a movable impression member, a work support, a casing, a spring in the casing to sustain the work support yieldingly during the impression, a bushing threaded through the casing and engaging the springto adjust its tension.

20. In a marking machine, a movable impression member, a work support, a casing, a spring to sustain the work support yieldingly during the impression, a bushing threaded through the casing to adjust the tension of the spring, and a rod extending through the bushing and provided with means to limit the movement of the work support under the influence of the spring.

21. In a marking machine, a movable impression member, a work support having a sleeve, a guideway for the sleeve, a spring to sustain the work support yieldingly during the impression, and a rod extending through the spring to limit the movement of the work support under the influence of the spring.

22. In a marking machine, a movable impression member, a work support, a spring to sustain the work support yieldingly during the impression, a rod within the spring to limit the movement of the work support under the influence of the spring, and a casing to enclose the spring and rod.

23. In a marking machine, a movable impression member, a work support, a sleeve connected to the work support and having a keyway, a slotted guideway, and a combined key and friction block operable in the slot to engage the keyway to hold the sleeve against rotation at alltimes and to hold the work support in the position to which it is forced by the impression.

24. In a marking machine, a movable impression member, a work support having a sleeve, a casing to receive the sleeve, a spring to yieldingly sustain the work support during the impression and enclosed within the sleeve and easing, a bushing threaded in the casing to adjust the tension of the spring, a rod extending through the spring and the bushing, means on the rod to limit the movement of the work support under the influence of the spring, and means to lock the sleeve frictionally between impressions.

25. In a marking machine, a movable impression member, a work support, a casing in which the work support moves, a spring in the casing to sustain the work support yieldingly during the impression, a lever pivoted to the casing, a friction block to engage the work support to hold it between successive impressions, an expansion spring engaging one arm of the lever and the casing, a screw adjustable on the other arm of the lever to engage the friction block, and means to actuate the lever to withdraw the screw from engagement with the friction block against the tension of the spring;

26. In a marking machine, a marking head having a series of impression members, a series of setting members normally supported out of setting position, and means to move the setting members into setting engagement with the impression members.

27. In a marking machine, a movable marking head having a series of impression. members, a series of setting members, and means to move the latter into engagement with the impression members when the head is stopped.

28. In a marking machine, a marking head having a series of impression members, setting means normally supported out of setting position, and means to move the setting means into a position to actuate the desired impression member. N 29. In a marking machine, a marking head having a series of impression members, a series of setting members normally supported out of setting position, means to move the setting members into setting position to effeet a geared engagement of the impression members and setting members.

30. In a marking machine, a movable marking head having a series of impression members, a rock arm, a series of setting members mounted on the rock arm, and means to move the rock arm to carry the setting members into engagement with the impression members.

81. In a marking machine, a movable marking head having a series of impression members, a series of setting members, means to move the latter into setting engagement with the impression members, and means automatically to move the setting members out of setting position.

32. In a marking machine, a movable marking head having a series of impression members, a series-of setting members, a controller, and connections between the con-- sion members, and a series of setting members movably mounted to engage the impression members only during the setting thereby to prevent the undue heating of the setting members.

34. Ina marking machine, a .movable marking head having a series of impression members, a heating unit for application to the impression members, a series of setting members movable into a setting position, means including spring pressed members for selectively actuating the setting members, and means to carry the setting members out ofsetting engagement with the heated impression members to avoid drawing the temper of the springs.

35. In a marking machine, a movable marking head having a series of impression members, a series of setting members supported. independently of the marking head to reduce the weight of the head, and means to move the setting members into setting engagement with the impression members.

36. In a marking machine, a marking head, means to actuate the marking head intermittently, means to apply ink to the marking head during one dwell in its movement and a work support engaged by the marking head during another dwell in its movement.

37. In a marking machine, a work support, a marking head normally supported in a raised and rearward position to afford cess to the support, means independent of the marking head to select characters in the normal position of the head, means to ink the characters in the normal position, and means to move the head forwardly and downwardly against the support.

88. In a marking machine, a marking head, means to actuate the marking head in termittently, means to apply ink to the marking head during one dwell in its move ment, a work support engaging the marking head during another dwell in its movement, means to lock the work support in position, and common means to actuate the inking device and the locking means.

39. In a marking machine, a work sup,- port, a marking head normally supported in a raised and rearward position to uncover the support, means, independent of the marking head, to select characters in the normal position of the latter, and means to move the marking head forwardly over the center of the support and down upon it in a straight line.

40. In a marking machine, a framework, a marking head carrier, a rocking lever and a cam lever pivoted to the framework, a link connecting the cam lever and the marking head carrier, connections between the rocking lever and the marking head carrier, and means to oscillate the cam lever to carry the marking head carrier forwardly and downwardly.

41. In a marking machine, a framework, a marking head carrier, a rocking lever and a cam lever pivoted to the framework, an angle arm on the cam lever, a connection be tween the rocking lever and the marking head carrier, a connection between the angle arm and the marking head carrier, and a cam to actuate the cam lever intermittently to operate the marking head carrier.

42. In a marking machine, a work support, a marking head having type wheels, and cam actuated mechanism to hold the marking head in inking position, move it against the work support, maintain it for an interval against the work and then raise it.

43. In a marking machine, a work support, a marking head having type wheels, heating means for the latter, and means, including a cam, to move the type wheels towards the work support and to maintain them for an interval against the work.

44. In a marking machine, a work support, a marking head, means to actuate the marking head intermittently, and means to apply ink to the marking head during a dwell in its movement.

45. In a marking machine, a marking head, a pivoted actuating lever for operating the head, a cam shaft, and a cam op erating between the shaft and the pivot of the lever during the marking movement of the head, and operating on the far side of the shaft when the head is raised.

46. In a marking machine, a marking head, a pivoted cam lever for operating the head, and a cam constructed and arranged to act near the pivot of the lever in lowering the head and farther away from the pivot in the raising movement of the head.

47 In a marking machine, a marking head having a series of rotatably adjustable impression members, a similar series of setting members supported for movement into and out of operative engagement with said impression members, manually operated means frictionally connected to each of said setting members, means for positioning said means, and releasable latches for said impression members for determining which of said impression members will be rotated upon the actuation of said manually operated means.

48. In a marking machine, a movable marking head having a series of impression members, a series of setting members supported independently of the marking head to reduce the Weight of the head, means to move the setting members into setting engagement with the impression members, means for selectively looking or releasing said impression members, and means for operating the setting members while part of said members are operatively engaged with locked impression members.

49. In a marking machine, a Work support, a marking head normally supported in a raised and rearward position to afford access to the support, means independent of the marking head to select characters in the normal position of the head, means to actuate the marking head intermittently, means to apply ink to the characters in their normal position during one dwell in the move ment of the marking head, said actuating means being constructed and arranged to move the marking head forwardly and downwardly against the support and cause the same to dwell in engaging position before being raised to normal position.

50. In a marking machine, a movable impression member, a Work support having a sleeve, said sleeve being provided with a key- Way, a frame for said machine comprising a casing surrounding said sleeve and provided with a slot adjacent to the keyway in the sleeve, a combined guide and friction block operable in the slot to engage the keyway, constructed and arranged to'hold the sleeve against rotation at all times and to retain the work support frictionally in various positions, a spring within said sleeve urging said work support upwardly, means for adj usting the tension of the spring, means pivoted on the frame of the machine having an adjustable member bearing against said friction block, resilient means urging said adjustable member against the block, means to adjust the tension of said resilient means, and means actuated during the operation of the machine to withdraw said adjustable member from engagement with the friction block to allow the work support to be held between the pressure of the impression member and the pressure of the supporting spring.

In testimony whereof 'I have signed my name to this specification.

PERLEY R. GLASS.