US255704A - Inyentoe - Google Patents

Description

4 Sheets-Sheet 1 (ModeL) r H.-P. TRUEMAN & J G. NEW.

' PRINTING PRESS.

No. 255,704. Patgnted Mar. 28,1882.

CZNESSEW I 44W 7W ATTORNEYS.

N. PErERs, PhMo-Ulhogrnphm Walhingnn. D.C.

(ModeL) 4 Shets-Sheet 2.

H. P. TRUEMAN & J. G. NEW.

PRINTING PRESS.

Patented Mar. 28,1882.

INVENTOR WITNESSES:

ATTORNEYS N. PETERS. Pham-Limn m hw. Wnhmgmn, D. c.

(ModeL) 4 Sheets-Sheet 3 H. P. TRUEMAN & J. G; NEW.

PRINTING PRESS. No. 255,704. Patented Mar; 28,1882.

I IIIIJ- ITNESSES INXFNTUR ATTORNEYS.

(M0de1.)- 7 4Sheets-Sheet 4.-

RP. TRUE-MAN & J. G. NEW.

PRINTING PRESS.

No. 255,704. Patented Mar. 28,1882

TNESSES' INVBNTOR:

I ATTORNEYS.

,N. PETERS. Photo-Lithographer. wnhin wn. n. a

is a reduced end elevation of cylinder, platen,

UNITEn STATES PATENT FFICE.

HENRY r. TRUEMAN AND JOHN G. new, or BIRMINGHAM, COUNTY or- \VARVVICK,

PRINTING-PRESS.

SPECIFICATION forming part of Letters Patent No. 255,704, dated March 28, 1882. Application filed October 13,1880. lModel.) Patented in England November 8, 1879.

To all whom it may concern:

Be it known that we, HENRY PATTMAN TRUEMAN and JOHN GEORGE NEW, of Birmingham,in the county of Warwick,England, have invented a new and Improved Printing- Press,of which the followingis a specification.

The object of this inventionis to construct a printing-press of greatsimplicityot'construction and little cost.

()urinvention is .an' improvement inthe class i of printing-presses in which the entire machanism is operated from the main shaft with the aid of gears and cams.

The construction and combination of parts are as hereinafter described and claimed.

' Figure l is a side elevation of the machine. Fig.2is a front elevation of the same. Fig. 3

inking -rolls, and certainother co-operating parts. Fig. 4 is a plan view of the machine. Fig. 5 is a vertical central section of the same.

Between the sides of the frame-work AA of the machine is mounted a D cylinder or drum, B, havingaboutone-fourthof its circumference left hat for the reception of a form of type in its chase. This flat surface 0, Figs. 3 and 5, forms the bed of the machine. Through the center of the cylinder D is passed the main shaft D. One end of this shaft takes bearing in one side of the frame-work A, and the other end in a sleeveor boss (not shown) formed on one end of the cylinder B, the sleeve resting in the other side of the frame-work A. The main shaft D, though supporting the cylinder B between the frames A A, is allowed to revolve freely within its bearings.

Between the frames A A and the ends of the cylinder B are fixed the roller-gates E. One of these gates orframes E is keyed to the shaft 1), and the otheris allowed to revolve freely onthe sleeve of the cylinder 13, connection between the keyed gate and the free one being made by suitable stays or rods. The roller-gates E carry the inking and distributing rollers 1 2 3 4 5 around the circumference of the cylinderl3,and also across the type on the bed U. The requisite extension and retraction of these rollers in passing round thecylinderB areprovided forby springs F. When the press is at work the bed Oismaintained rigidly vertical by means of the lever G, keyed upon the sleeve of the cylinder B. The lever G is locked in either of two positions (shown in full and dotted lines, Fig. 5)

order to operate the platen H, as described,

and also to give a pause or rest to the said platen for feeding the sheets, we make the side levers or draw-bars, J J, in two parts jointed at K. The throw of the crank L, Fig. 1, is also increased more than would be necessaryif the levers J were notjointed. This increased motion is employ ed in turning the platen H over by meansof the joint K, and thus producing the exact motions required without resorting to cams.

The draw-bars J are not connected to the axis H of the platen H, as is usual in such machines, but by means of the links or levers J are made to take hold of a shaft, M, which shaft sustains the force of the impression.

To provide for ready adjustment of pressure on the form, the shaft M is formed with eccentric ends, and is turned on its axis to reduce or increase thepressure by the lever N and adjusting-screw N. U

The sheets are held on the platen H by frisket-arms O, which may be operated by a pin 7 on the frame-work; but we prefer to use the simple lever P, which, forming part of a parallel motion, (indicated at a b c d, Fig. 3,) maintains the t'risket-arms O constantly vertical. For convenience of adjustment one end of the leverP is provided withanotch to adapt it for temporary attachment to a stud on an arm, r, that is fixed on the sliding block H The lever may therefore be disconnected and the arms 0 allowed to rest on the platen Hin any position.

The bed 0 may be moved into a horizontal position by means of the lever G, as shown in dotted lines by Fig.3.

Ink is supplied to the cylinder B by means of the large roller 5, Fig. 3. The smaller rollers 1 2 3 4 take ink from the cylinder 13 and deposit it upon the form on the bed 0. The

roller 5 is itself supplied with. ink by being lifted from the cylinderB by a raised pathway when opposite the endless apron Q, which apron Q takes ink from the doctor-roller 1%.

The roller 5, Figs. 4 and 5, is formed with a spiral groove upon its surface, so as to lay the ink nporr the cylinder B in diagonal lines,

which said diagonal lines are immediately recrossed by the rollers 1 2 3 4 traveling in right lines around the cylinder 13. NVe thus inducev perfect distribution of the ink upon the cylinder B. r,

The quantity of ink may be readjusted to the work in hand by four methods: First, the apron Q may be advanced nearer to the cylinder B by means of a screw, g, Fig. 4, which slides the apron Q and the roller R upon their frame-work, and thus causes the roller5 to re main longer in contact with the apron Q while traversing the cylinder B; second, the knife of the ink-box may be set so as to allow of more or less ink being delivered to the apron Q; third, the roller It is moved through a variable distance by means of the ratchet S and adjustabledisk-crank T and theirconnections;

- fourth, one, two, three, or four rollers may be continues to revolve.

U is the fiy-wheel; V, the pulley for driving by power; W, the treadle, which, being connected with the friction-clutch plates or levers X, causes them to grasp or release the flywheel U' at will. The hub portion of the latter presents a wood surface to said clutch-lever. They work in contact with an adjustable cone,Z,whose base has parallelsides,on which the levers rest after being forced open by the conical portion-a construction by which all side pressure from the fork of the clutch is avoided.

Having thus fully described our invention, we claim as new and desire to secure by Letters Patent 1. The combination, with the stationary cylinder B,rotary shaft D, the vertically-arranged apron Q, and roller 1%, of the series of rollers l 2 3 4 5, one of which is spirally grooved, and the roller-gates E E, one of which is fast on said shaft, so that the rollers are carried around between the apron and cylinder, as shown and described.

2. The combination, with the cylinder B, having a type-bed, O, and mounted loose on its supporting-shaft, of the lever G for adj usting said cylinder, and the spring-pressed plate for locking the lever, as shown and described.

3. The combination of the rod or lever P with the frisket-arnrs O and a platen, H, said lever beinr, adapted for attachment to the frame at a fixed point, as shown and described, for the purpose specified.

HENRY PATTMAN TRUEMAN. JOHN GEORGE NEW. Witnesses:

O. G. TRUEMAN, EDWD. BAKER.

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