US781124A

US781124A - Draftsman's printing-machine.

Info

Publication number: US781124A
Application number: US18050103A
Authority: US
Inventors: Andrew J Bradley
Original assignee: Individual
Current assignee: Individual
Priority date: 1903-11-10
Filing date: 1903-11-10
Publication date: 1905-01-31
Anticipated expiration: 1922-01-31

Description

PATENTED JAN. 31, 1905.

- NIBNIIIILEI. DRAPTSMANS PRINTING MACHINE.

2 SHEETS-SHEET 1'.

APPLICATION FILED NOV. 10,1903.

Fig. 1.

No. 781,124. PATENTBD JAN; 3l, 1905.

A. J. BRADLEY. i DNAITSMANS PRINTING MACHINE.

APPLICATION FILED NOV. 10,1903.

2 SHEETS-SHEET 2.

Fig. 4.

' Attorneys.

Wtnessles. I` 3V Y I Inventor; n

' By J M f UNITED i STATES Patented January 31, 1905.

PATENT OFFICE.

ANDREW J. BRADLEY, OF -NEW YORK, N. Y.

DRAFTSMANS PRINTING-MACHINE.

SPECIFICATION forming peut ef Letters Patent No. 781,124, dated January 31, 1905.

Application iiled November 10, 1903. Serial No. 180,501.

To all whom t may concer-7c.'

' Iication.

vthe arrangements and combinations of My invention relates totype -printing machines, and especially to typeprinting ma'- chines for the use-of draftsmen in `lettering sheets, blue-prints, maps, and the like. lts' principal objects are to simplify the construction of suchl machines, to provide for the use ofa variety of kinds of type, to readily change the type, to change the feed of the machine to'correspond with the type in use, and other objects hereinafter more fully appearing.

My invention consists in the -parts and in parts hereinafter described and claimed.

In the accompanying drawings, forming part of this specification, and wherein like4 symbols refer to like parts wherever they occur, Figure 1 is a plan/view of my machine. Fig.. 2 is a longitudinalsectional view onthe line 2 2 of Fig. 1. Fig. 3 is a transverse sectional View on the line 3 3 of Fig. 1, and Eig. 4 is a front view. l

. The mechanism of my improved printinglmachine is carried by a base 1, mounted upon rollers 2 3 4. Eachy roller is preferably provided with a tire 5, of rubber or frictional material,which will not readily slip upon paper, so that motion of the machine over the surface can only occur by rotation of the rollers..

The roller 2is journaled in bearings 6 7 upon one side of the base. The rollers 3 4 are mounted upon a common axle 8, which is journaled in bearings 9 10 upon the opposite side of the base. The rollers 34 being of the same diameter and rigidly connected, successive positions ofthe base will be parallel -and the type will necessarily be moved in a straight line.

the surface upon which it rests. A springbrake bears upon the opposite roller to prevent rotation of the rollers upon the downward movement of the pawl. The brake consists of a wire spring 12 coiled about apin 13 in ears 1-4 15 on the base and having a bearing upon the base at one end. and upon the roller at the other. The spring bears on the roller in such manner that forward Inovement of theflatter occurs against the normal pressure of the spring, while rearward movement causes the spring to bind.

A type-wheel-carryingarm 16, havingdownwardly-extending bifurcations at its rear end,

is pivoted upon a rod 17, mounted in ears 18 19'upon the base 1. The arm is normally held in its uppermost position (indicated in dotted movement of the arm and is held in a given adjustment by a set-nut 24. A flange 25 on the arm 16 surrounds the slot 22 and is so beveled that when the arm is inclined, as in its uppermost position, it will bear squarely on the flanged nut 23. Downwardly-extending lugs 26 27, intermediate of the ends of the arm 16 and upon the extreme front end the type-carrying members.

A type-wheel or spider 28 is mounted upon l an axle 29, which is journaled in the bearings 26 27. The frontend 30 of the axle is reduced in section and screw-threaded, while thefront side of the hub of the wheel 28 has a reduced extension 3l. Upon .the latter is a knurled collar 32, which is secured against rotation with respect to the wheel 28 by a pin 33, extending into the hub. A handle 34 is mounted upon the screw-threaded end 30 of the axle and slightly overlaps the knurled collar 32, and thus secures it in position. By this construction the wheel may be readily rotated.

A type-tire 35, ofl any suitable material, but preferably of metal, is removably secured to the rim of the wheel 28. Upon its periph- IOO is provided with recesses 36, by means of which it is secured in position. Upon the inside of the rim of the wheel are counterbored lugs 37, having inclined inner surfaces or cams. Projecting throughthese bars 37 are pins 38, having collars 39 near their outer ends and laterally-extending arms 40 near their inner ends overlying the cam-surfaces. Springs 41 bear upon the said collars 39 and the base of the larger part of the counterborings and tend to move the pins radially outwardly. The pins 38 project beyond the rim just enough to engage the recesses 36 on the type-tire when the laterally-extending arms 40 engage the lowermost portions of the cams. To remove a type-tire, it is only necessary to turn the pins about until the laterally-extending arms engage the highest portions of the cams, when the pins will be withdrawn from the recesses 36 and the type-tire will be free to be removed. A set of typetires having` characters of diiferent sizes or different styles is provided. By the arrangement described the tires are readily interchangeable.

Upon the front of the type-wheel 28 is an index-plate 42, made of any suitable material and provided with the same series `of characters as the type-tire. The cooperating indicator being at the top of the wheel, while the printing-point is at the bottom, it is obvious that it is necessary to place the index-plate so that its characters are one hundred and eighty degrees from the same character on the typetire.

A frame member 43 is secured to the front end of the type-wheel-carrying arm 16 intermediate of the lug 27 and the type-wheel 28. It is secured in position by the axle 29 of the type-wheel and pins 44 45 passing through the frame member and the lug 27. At its upper end the frame member has aforwardly-extending portion 46, provided with grooves 47 48. In these grooves substantially U-shaped ink-roller frames 49 50 are mounted. A leaf-spring 51 is secured to the top of the forwardly-extending portion 46 and bears upon the frames 49 50 to hold the rollers 52 53 carried thereby in contact with the type. The ink-rollers 52 53 may be of any usual construction and are rotatably mounted in the frames 49 50. When it is desired to remove an ink-roller frame the free end may be with a series of conical recesses 55, one for each character on the type-tire. Upon the indicator is a conical projection 56 in position to engage the said recesses successively. By this means the proper setting' of the wheel is insured and it is secured in position during the downward printing movement of the wheel.

To prevent the imprint of more than one character at a time, a shield 57 is provided. It is preferably circular in shape and made of iiexible material, preferably cellnloid. A rivet 58 rotatably secures it in position, and it may be secured in any given adjustment by a pin 59 extending through the base and engaging any one of the holes 60. Openings 61 of various sizes, corresponding to the different sizes of type to be used on the machine, are provided in the shield. For any particular type-tire a particular opening is turned to the front. W hen the type-tire is changed, the shield vshould be adjusted to correspond.

The mechanism for feeding the machine over the surface upon which the printing is to be done will now be described.

In ears 62 63 on the base a compound spacing-bar is pivoted. Said bar consists of a primary bar 64 and a secondary bar 65, adjustable relatively thereto. The secondary bar 65 is substantially U-shaped. One arm is pivoted near the middle of the primary bar. The other arln has a slot 66, which is engaged by a set-screw 67 in the primary bar, and the connecting portion lies in the path of the axle 29 of the type-wheel 28, which, so far as this function is concerned, may be regarded as a part of the type-wheel-carrying arm 16. By this adjustability the spacing-bar may be arranged to be engaged sooner or later by the type-wheel-carrying arm, and thus be depressed more or less. The slotted arm is provided with graduations 68, indicating the proper adjustmentfor the various sizes of type to be used. A spring-pawl 69 is carried by the free end of the primary bar 64 in position to engage the ratchetwheel 11. The pawl is arranged to slip over the teeth of the ratchet-wheel on the downward stroke and to engage them on the upward stroke. The amount of rotation hence depends upon the length of the downward movement of the pawl, which, as indicated above, depends upon the adjustment of the secondary bar upon the primary bar. The spacing-bar is normally held up by aspring 70, surrounding a rod 71, mounted on the base, extending through a slot 72 in the primary bar and carrying nuts 74 on its upper end to limit thc upward Inovement of the bar.

rlhe operation of the machine is as follows: When placed upon the paper and before operation, the parts are in the position indicated by the dotted lines in Figs. 2 and 3. The index-plate is then held at such an angle to the vertical that it is almost squarely facing the operator. By means of the handle 34 or IOO IIO

knurled collar 32 the wheel is rotated until the letter.

desired character on the index-plate is opposite the indicator. Then the desired character on the type-tire is in position to print. Pressure is then exerted downwardly upon the handle, and lthe type-wheel is moved downwardly to impress the character upon the paper, as indicated in Fig. 2. In its downward movement the type-wheel-carrying arm engages the spring-bar and carries the pawl 69 down to its lowermost position, thus setting the spacing mechanism to feed the machine forward to the proper position for the next The impression being made, pressure is discontinued, and the springv willv raise the type-carrying arm and parts carried thereby. The spring 70 will raise the spacing-bar, and with it the pawl 69, thus rotating the rollers 3 4:v and moving the base to the proper position for the next letter. l

Since the adjustment of the feed is accomplished by adjustment of the' stroke of the pawl 69, obviously thefeed may be adjusted by means of the nuts 73 74 on the rod 71.-

These nuts may be raised or lowered so as to change the limit of the upward movement of the spacing-bar, and thus modify-the length of the stroke of the pawl. With this constructin the spacing-bar need not be made adjusta e. v

- Obviously the machine chosen for illustration of my invention is capable of considerable modification without departing from the spiritthereof, and therefore l do not wish to be limited to the specific form'hereinbefore described. yWhat I claim isl l. A printing-machine comprising la movable base, an arm pivoted thereon, a type-carrier pivotally mounted on said arm and adj ustable feed mechanism for said-base arranged to be set bysaid arm on its printing stroke.

2. A printing-machine comprising a base, a feed-roller therefor, a type-carrier pivotally mounted on said base, and adjustable mechanism to actuate said feed-roller operatively connected to said type-carrier.

3. A printing-machine comprising a movable base, an arm pivoted thereon, a rotatable type-,carrier on said arm, and feed mechanism for said base comprising a pivoted lever arranged to be engaged by said arm.

1. A printing-machine comprising a movable base, an arm pivoted thereon, a rotatable ty pe-carrier on said arm, and feed mechanism for said base comprising a pivotedl spacingbar adjustable in width and arranged to be engaged by said arm.

5. A printing-machine comprising a movable base, an arm pivoted thereon, a rotatable 4 type-carrier on said arm, and feed mechanism for said base comprising a pivoted primary bar`and yan angularly-adjustable secondary bar pivoted on said primary bar and arranged to be engaged by said arm.

6. A printing-machine comprising a base,

a feed-roller therefor, an arm pivoted on said base, a rotatable type-carrier on said arm andl actuating mechanism for said feed-roller com- 8. A printing-machine comprising a base,

a feed-roller therefor, an arm pivoted on said base, a rotatable type-carrier on said arm and actuating mechanism for said feed-roller comprising a pivoted primary bar, and a secondary angularly-adjustable bar pivoted on said primary bar and arranged to be engaged by said arm. 9. A printing-machine comprising a movablebase, a type-carrier pivotally mounted thereon, a tire removably mounted on said type-carrier and provided with type and adjustable feed mechanism'for said base operatively connected to said type-carrier.

10. A printing-machine comprising a movable base, a type-carrier pivotally mounted thereon', a tire removably mounted on said type-carrier and provided with type and a able base, a type-carrier pivotally mounted thereon, a tire removably mounted on said type-carrier' and provided with type, a shield pivotally mounted on said base and provided with a plurality of openings 'of different sizes, and feed mechanism for said base. l

12. A printing-machine comprising a movable base, a 'type-carrier pivotally mounted foo thereon, feed mechanism for said base .operatively connected to said type-carrier, and a. brake for said feed mechanism arranged to interpose a greater resistance to rearward than forward'movement of said base. j

13. A printing-machine comprising a base, rollers therefor, a brake `continuously engaging one ,of said rollers and arranged to interpose a greater resistance to rearwardthan to forward movement'of said base, a type-carrier pivotally mounted on said base', and actuating mechanism for said base operatively connected to said type-carrier. f

V1&1. A printing-machine comprising abase,

an arm pivotally mounted thereon, a rotata-y "ble type-wheel on said arm provided with type andl having a series of recesses registering with the .individual type characters, an indicator-plate on said type-wheel and a springdetent having a projection' arranged toengage said recesses successively and having a forwardly and downwardly projecting portion arranged to cooperate with said Vindicator-plate.'

15. A printing-machine comprising a base, an arm pivot-ally mounted thereon, a rotatable type-carrier on said arm having type on its periphery, a frame member on said arm having a portion extending over said typeearrier and provided With grooves, ink-roller frames mounted in said grooves, ink-rollers in said frames and a spring extending over said frames and arranged to retain said frames in said grooves and to press said ink-rollers against said type.

16. A printing-machine comprising a base, feed-rollers therefor, a ratchet-Wheel rigidly connected to said rollers, a type-Wheel-oarrying arm pivoted on said base, an adjustable stop to limit the upward movement of said arm, a spring normally holding said arm against said stop, a spacing-bar carrying a pawl to engage said ratchet and arranged to be engaged by said arm, a stop to limit the upward movement of said spacing-bar and a spring to normally hold said bar in engagement with said stop.

17. A type member for a printing-lmiehine comprising a Wheel, an inwardly-extending oounterbored lug having a cam-surface upon the rim thereof, a radially-spring-pressed pin in said lug having an arm engaging said eamsurface, and a tire provided with type on its periphery and having a recess to be engaged by said pin to removably seeure said tiro upon said Wheel.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing Witnesses, this 9th day of November,

ANDREW J. BRADLEY. Witnesses:

JAMES L. PRYOR, Jr., JULIUs F. HoLBRooK.