US563931A

US563931A - Samuel john laugiilin and james hough

Info

Publication number: US563931A
Authority: US
Publication date: 1896-07-14
Anticipated expiration: 1913-07-14

Description

(No Model.)

' S. J. LAUGHLIN 81; J. ROUGH.

' DRAWING TABLE. No. 563,931. Patented July 14, 1896.

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UNITED STATES SAMUEL JOHN LAUGlILlN ANI) JA DRAWlN MES IIOUGII, 0F GUEIJPH, CANADA.

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SIEGIFICATIGN formingpart of Letters Patent No. 563,931, dated'Jl'uly 14, 1896. Application led August 10, 1895. Serial No. 568,934. (No model To @ZZ whom it may concern.:

Be it known that we, SAMUEL JOHN LAUGH- LIN, mechanic, and JAMES IIOUGH, printer, of the city of Guelph, in the county of Wellington, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Drawing-Tables for Detail Work, of which the following is a specifica# tion.

Our invention'relates to improvements in drawing-tables more especially designed ,for detail Work, and the object of the invention is, first, to make a table of convenient and suitable construction for detail Work; secondly, to design a simple means for holding the portion of the roll .of paper which is being drawn upon securely in position without the aid of thumb-tacks or pasting it down upon the top of the 'draWing-table; audit consists, essentially, in the construction and arrangement of the table, as hereinafter more particularly explained, and pointed out in detail.

Figure l is a perspective View of a drawing-table for detail Work, the table being partially brel-.en away to exhibit the construction. Fig. 21's a longitudinal section intermediately broken away through one of the side rails of the table, showing the holding screws and bars. Fig. Sis a cross-section of the table through the lines x y, Fig. 2. Fig. 4 is a cross-section of the table through the line y', Fig. 2. Fig. 5 is a section through one of the cross-bars connecting the legs and its corresponding longitudinal bar, showing the means of construction. Fig. 6 isa detail of cord-tightener.

. In the drawings like letters of reference indicate corresponding parts in each figure.

A are the side rails of the top ofthe table.

B are the cross-bars, which are connected to and extend underneath the side rails A.

B is a supplemental bar extending on top of the eross-bar and of the same depth as the side rails A, so that the top of it is lush with the top of the side rails. In the present table as constructed there are five cross-bars. B with their supplemental bars B. Underneath each cross-bar, next to the cross-bar at each endare secured the legs O of the table, each pair of which at each end is connected together by the crossbars C'.

At each end of the side rails A and secured to the top of them We provide cross-rails D.

E are the longitudinal boards, which form the top of the table, as shown in Fig. This longitudinal board rests upon the top of the supplemental cross-bars B', and the outer edges of the board E extend over the inner edges of the side rails A, as shown in Fig. 3. The side rails A are provided with slots a` at desired distances apart through their length, the slots being longest 'from side to side.

a are set-screws, the heads of which rest against the sides of the slots, the screws being screwed into the top board E on the outer sides and through the supplemental bars B. It will be seen that the slots a and screws a' serve to hold the top board E down and yet permit of contraction or expansion of the said board E.

F are holding-bars, which extend across the to the ends of the longitudinal board E, forming the tcp of the table. The ends of the longitudinalboard are rounded o at e, as shown.

C are hand-screws, which extend through the end bars D and bear against holdingbars F. j

H is a roll of paper, which is supported on cured to the legs of the table, as shown. The roll-H passes up through the table, between the holdin g-bar F and the end of the board E at this end of the table. The paper passes along end, between this end of the board E and the holding-bar F. The paper then passes down to a holding-rack I, comprised of the upper vertical bars'l, secured to the cross-bars C', the outwardly-extending spindles I2, conend 'run-gs I* extending up from thern and connected by the top rail 15. It will be noticed that the holding-bar has notches f cut out of the opposite ends underneath, so as to hold it in position laterally upon the side rails A. The cross-bars C are connected at the top and bottom by longitudinal rails C2. rlhe top rail C2 has at each end, however, a bracingbracket c2, which is secured to the top of the rail and abuts the top cross-bars C. Both cross-rails C2 are connected at each end to the table within the. end bars D and in proximity a spindle h, held in the end brackets 7L', se- Y the top of the table and down at the opposite neeted by the cross-bar I3 and having the IDO cross-bars C by bolts J, the inner ends of which extend into recesses o' in the cross-rails C2 and are threaded and have nuts j screwed on to their inner ends. The outer ends of the bolts J are also threaded and are provided with thumb-nuts J .It will be seen that by this simple device the pairs of legs of the ta ble may be taken apart by simply unscrewing the thumb-nuts, and this will be found .veryfconvenient for shipping.

. L and ratchet-pinions Z, secured on the lower ends of the screw-spindles Z.

Z2 are spring-dogs, which engage with the ratchet-pinions Z, and are secured under-v neath the side rails. ly turning the knobs L the cords 7c may be tightened suiciently so as to insure the accurate movement of the 'ruler K over the table. A y,

'It will be seen from the construction of our table that by unscrewing the screws Gr'the paper may be shifted as desired, and that by again screwing up, after first stretching the paper suiiiciently, such paper may be `held tant and secure. It will also be seen that `from the construction of the tableit may be taken apart very readily and laid down flat, ready for shipment.

That We claim as our invention is- 1. In combination in a drawing-table, the frame, the top board supported thereby, the end barshavinghand-screws Workin g therein and the end sliding bars F operated by said screws, substantially as described.

`2. In combination in a drawing-board, the frame, the top board supported thereby, the end bars D .having the thumb-screw Working therein,and the sliding bars F freely movable and guided by said frame, said bar F being adapted to be held in position by said screws.

3. In combination in a drawing-board, the side rails A, the end bars D, the frame snpport'ing the same, the top board E supported by said rails A, said board being of less length than the distance between the end bars I) whereby a spaceis left betwecnueach end of said board and said bars, whereby paper may be fed from beneath the board around the edge thereof and across the top of thc same, the freely-movable sliding bars F interposed in said spaces, and the means for clamping said bars against the ends of the said board, substantially as described.

4. ln combination in a drawing-table, the end bars, the top board fitting -between the same leaving a space at each end thereof, the brackets supported from the front legs of the table, the spindle carrying a paper-roll journaled in said brackets, said paper bein g adapted to be fed through said spaces an d the means for clamping the same against the edges of said board, substantially as described.

SAMUEL JOHN LAUGl-ILIN. JAMES IIOUGII.

Witnesses:

D. E. MACDONALD, ALF WATSON.