Improvements in Drawing Tables for Detail Work.
Year: 1895

page_text: Date of Application, 7th Nov., 1895-Accepted, 22nd Feb.,
1896
COMPLETE SPECIFICATION.
Improvements in Drawing Tables for Detail Work.
We, SAMUEL JOHN LAUGHLIN, Mechanic, of Waterloo Avenue, and JAMES
HOUGH, Printer, of Kent Street, both of the City of Guelph. in the County of
Wellington, in the Province of Ontario, Canada, do hereby declare the nature of
this invention and in what mauner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
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 con-
venient 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 the
upon
top of the drawing table and-thirdly-to provide a simple means for tightening
the cord of the longitudinal movable straight edge and it consists essentially in the
construction and arrangement of the table as hereinafter more particularly
explained, and pointed out in detail.
Fig. 1, is a perspective view of a drawing table for detail work, the table being
partially broken away to exhibit the construction.
Fig. 2, is a longitudinal section intermediately broken away through one of the
side rails of the table showing the holding screws and bars.
Fig. 3, is a cross section of the table through the lines a-y Fig. 2.
Fig. 4, is a cross section of the table through the line - 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, is a 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 of the 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 cross bar and of the same depth as the side rails A, so
that the top of it is flush with the top of the side rails. In the present table a's
constructed there are five cruss bars B with their supplemental bars B'. Under-
Death each cross bar next to the cross bar at each end are secured the legs C of .
the table, each pair of which at each end is connected together by the cross
bars C¹.
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. 3. 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. a¹ 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..
Fare holding bars; which extend across the table within the end bars D and in
proximity to the ends of the longitudinal board E forming the top of the table.
The ends of the longitudinal board are rounded off at e as shown. G are ban
crews, which extend through the end bars D and bear against holding bars. F.

page_text: H is a roll of paper, which is supported on a spindle held in the end brackets h¹
secured to the legs of the table às shown. The roll H passes up through the table
between the holding bar F and the end of the board E at this end of the table.
The paper passes along. the top of the table and down at the opposite 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 I secured to the cross bars C¹
the outwardly extending spindles 12 connected by the cross lar and having the
end rungs extending up from them and connected by the top rail. It will be
noticed that the holding bar has notches fcut out of the opposite ends underneath
so as to hold it in osition laterally upon the side rails A.
}
The cross bars C' are connected at the top and bottom by longitudinal rails C
The top rail C has at each end, however, a bracing bracket which is secured
to the top of the rail and abutts the top cross bars C¹. Both cross rails Care
connected at each end to the cross bars C' by bolts J the inner ends of which
extend into recesses in the cross rails C' 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 table may be taken apart by simply unscrewing the thumb
nuts, and this will be found very convenient for shipping. C³ are braces for
connecting the top and bottom rails C.
K is the ruler, which is designed to move lougitudinally over the table and has
end rollers k. are the cords, which are fastened at one end of the table in the
side rails as shown and are wound around the roller and pass through holes b made
through the side rails and one of the cross bars B at this end of the table, to
spools L provided with turning knobs L' and ratchet pinions / secured on the lower
ends of the screw spindles are spring dogs, which engage with the ratchet
pinions and are secured underneath the side rails. By turning the knobs L', the
cords may be tightened sufficiently, so as to ensure the accurate movement of
the ruler K over the table.
It will be seen from the construction of our table that by unscrewing the screws G
the paper may be shifted as desired and that by again screwing up after first
stretching the paper sufficiently, such paper may be held taut and secure.
It will also be seen that from the construction of the table, it may be taken apart
very readily and laid down flat ready for shipment.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. In a drawing table the combination with, the board forming the top and
supported on the frame as specified, of end holding bars and end bars with hand
screws extending through them against the holding bars as and for the purpose
specified.
2. The combination with the longitudinal top board, side rails and cross bars, of
the slots a and set screws a¹ all arranged as and for the purpose specified.
3. The combination with the top boards E, end bars with openings between
them and the ends of the top board, of the roll H supported at one end in brackets
and extending over the table as shown and for the purpose specified.
4. The combination with the top board E, end, bars with openings between them
and the ends of the top board, of the roll H extending through the opening at one
end and supported by the holding frame 1 constructed and located underneath the
top of the table as shown and for the purpose specified.
5. The combination with the top of the ruler K provided with end, rollers k, the
cords secured at one end of the top wound around the rollers and extending
through holes in the top to the spools L provided with turning knobs L', ratchet
pinions and spring dogs as and for the purpose specified.
6. The combination with the top board, of legs connected together by cross
bars C and the longitudinal connecting rails C, of the bolts J having the inner

page_text: ends provided with nuts ; in the recesses c¹ and the thumb nuts J¹ at the outer ends.
of the bolts as and for the purpose specified.
7. The combination with the top board, of legs connected together by cross
bars and the longitudinal connecting rails C, of the bolts J having the inner
ends provided with nuts ; in the recesses c, thumb nuts J' at the outer ends of the
bolts and the bracing brackets secured on the top of the top rails C' and abutting
the cross bars C' as and for the purpose specified.
Dated the 7th day of November 1895.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.