A New or Improved Lathe.
Year: 1890

page_text: Date of Application, 17th July, 1890
Complete Specification Left, 8th Apr., 1891-Accepted, 9th May, 1891
PROVISIONAL SPECIFICATION.
A New or Improved Lathe.
1, DAVID MEEK of 63 North Bridge, in the City and County of Edinburgh,
Watch Tool and Material Dealer, do hereby declare the nature of my said invention
to be as follows:-
This invention has reference to and comprises a new or improved construction, or
arrangement and combination of the parts of a light portable lathe for the use of
watchmakers or others, complete in itself and capable of being fixed in a vice or
other suitable stand for use, and susceptible of slight modification in some of the
parts; and which will be more convenient and useful than the tools heretofore
employed.
The nature and novelty of the improvements consist in carrying the spindle of
the lathe head, preferably in two standard bearings, one near the front end of the
spindle and one near the back, or it might be one long bearing standard in the
front projecting up from a simple plate bed or frame carrying the whole, with pro-
jection below for gripping in the vice or securing it to any convenient standard.
This plate would be carried forward a few inches in front the width of the bearing
heads or standards, with a slot for screw stud in the centre and with thumb screw
below, for mounting and securing a T swivel or other slide rest for the tools. The
spindle of this lathe would be substantially of an ordinary construction with its
cone groove pulleys for driving cords mounted on it either in the centre between
the bearing standards or behind it when only one standard is used, and be driven by
& foot or hand wheel mounted below or above or by the string and bow; and the
spindle would be hollow throughout with conoidal socket in front for being fitted
with the split cone spindles of segmental concentric gripping chucks or with solid
conoidal chuck spindles, and with the tightening or drawing up spindle inserted
from the back end for screwing on to the chuck spindles to tighten these up.
A further improvement consists in forming the overhung finger knob at the back
end of the tightening or drawing up spindle with a cord groove for driving the
main spindle through it by a cord bow or otherwise, which for many purposes
would be preferable to the ordinary mode of driving by cord pulleys on the inain
spindle.
These improvements make this tool more convenient light, and portable and
independent of other tools, or of a slide bed, although this might be used, than
watchmakers lathes have been as heretofore constructed.
Dated the 16th July 1890.
W. R. M. THOMSON & Co.,
Agents.
COMPLETE SPECIFICATION.
A New or Improved Lathe.
I, DAVID MEEK, of 63 North Bridge, in the City and County of Edinburgh,
Watch Tool and Material Dealer, do hereby declare the nature of my said invention
and in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement in writing reference being had to the
accompanying drawings
:-
This invention has reference to and comprises a new or improved construction, or
arrangement and combination of the parts of a light portable lathe for the use of
watchmakers or others, complete in itself and capable of being fixed in a vice or

page_text: other suitable stand for use, and susceptible of slight modification in some of the
parts and which will be more convenient and useful than the tools heretofore
employed.
And in order that my said invention and the manner of performing or carrying
the same into effect or practice may be properly understood, I have hereunto
appended an explanatory sheet of drawings in which Figure 1 represents an eleva-
tion in perspective of my new or improved construction of lathe tool. While
Figures 2 and 3 represent views of a step chuck and a split chuck respectively for
usc in said tool.
Referring to these drawings.-The improvements consist in carrying the spindle A
of the lathe head, preferably in two standard bearings B, B', one B near the front
end of the spindle A. and one B₁ near the back, or it might be one standard B with
long bearing in the front projecting up from a simple plate bed or frame B2, B³,
carrying the whole, with projection B" below for gripping in the vice or securing
it to any convenient standard. This plate B2, B3, is carried forward a few inches
in front at B³ the width of the base of the bearing heads or standards B B', with a
slot for screw stud b in the centre and with thumb screw 61 below, for mounting
and securing a T swivel or other slide rest. 2 for the tools. The spindle A of this
lathe is substantially of an ordinary construction with its cone groove pulleys A¹
for driving cords mounted on it either in the centre between the bearing
standards B B or overhung behind it when only one long bearing standard B is
used, and be driven by a foot or hand wheel mounted below or above or by the
usual string and bow; and the spindle A is made hollow throughout with conoidal
socket in front for gripping the split segmental cone parts e¹ of the spindles c of
chucks as shown in Figures 2 and 3, or it might be with solid conoidal chuck
spindles, and with the tightening or drawing up spindle C inserted from the
back end for screwing on to the inner ends c² of the chuck spindles c to tighten
these up.
A further improvement consists in forming the overhung finger knob C¹ at the
back end of the tightening or drawing up spindle C with a cord groove for driving
the main spindle A through it by a cord bow or otherwise, which for many purposes
would be preferable to the ordinary mode of driving by the cord pulleys A' on
the main spindle A.
These improvements make this tool more convenient, light, and portable, and
independent of other tools, or of a slide bed, although this might be used, than
watchmakers lathes have been as heretofore constructed.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
:-
First. The construction, or arrangement and combination of the parts of a hand
lathe tool, with a hollow main spindle A, for receiving and tightening the chuck
spindles by a back internal spindle C, C', substantially as herein described in
reference to and shown in the accompanying drawings.
Second. In a hand lathe tool, the fitting of an internal back spindle C, C', for
tightening up the split chuck spindles c in the main spindle, and having a grooved
or driving pulley on its outer overhung end, substantially as and for the purposes
herein described in reference to and shown in the accompanying drawings.
Dated the 7th April 1891
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.