Improvements in Multiple Spindle Machines for Drilling and for Fixing Screws or Nails in Boxes and the like.
Year: 1897

page_text: Date of Application, 23rd Feb., 1897-Accepted, 19th June, 1897
COMPLETE SPECIFICATION.
Improvements in Multiple Spindle Machines for Drilling and for
Fixing Screws or Nails in Boxes and the like.
I, SAMUEL STEVENSON of Samuel Stevenson & Co., Polmadie Saw Mills,
Rutherglen Road, in the County of the City of Glasgow, North Britain, Timber
Merchants and Saw Millers, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and ascertained
in and by the following statement :-
This invention relates to improvements in multiple spindle boring machines and
has for its object not only the boring but the feeding and screwing the nails into
the boxes or other article or place.
In order that my invention may be properly understood and readily carried into
effect I have hereunto appended sheets of drawings in the several figures of which
corresponding parts are marked with the same letters of reference.
Figure 1 is a perspective view of the apparatus.
Figure 2 is a side elevation and
Figure 3 is a detail view of the feeding device.
In carrying my invention into practice I mount in the overhead framework A of
the machine a number (ten I have found a very convenient number) of vertical
shafts or spindles B and C corresponding to the number of drills D and screw
drivers or bits E with which it is intended to construct the machine.
Upon the upper end of these vertical shafts or spindles B and C, are mounted a
corresponding number of bevil pinions F and G which are arranged in two vertical
and parallel rows and which gear with their respective bevil wheels H and I.
These bevil wheels H and I are mounted on and receive motion from two transverse
horizontal shafts J and K.
The first motion shaft is preferably the shaft K which gives motion to the drills
or boring bits.
It may be so arranged as to give a variable speed to the said tranverse shafts so
as to impart a slower speed of rotation to the screwing bits E than the said boring
drills D.
To enable the attendant to bring the work or such parts as require to be
screwed together up to the drills or boring spindles a rocking shaft L is employed
which by means of an arm or lever M supports the moveable platform N and is
acted upon by a treadle O which the attendant depresses at will, as well as by a
hand lever h.
The weight of the moveable platform is balanced by means of a counterpoise or
weight P to facilitate its being readily lowered or raised.
To impart a backward and forward motion to the box or article being operated
upon the platform N is moved in the horizontal plane by means of a rack and
pinion and R, which is operated by the hand wheel R¹.
To feed the screws to their respective holes to enable them being acted upon by
the screwing bits, a hinged bar S is employed. This hinged bar S consists of two
longitudinal bars or rods T. U. Moveably fitted to each of the hinged bars or
rods T. U. and capable of being slid along each bar are a number of rectangular
sections or metal pieces V capable of being expanded or opened laterally out, which
operation is performed by the separation of the two rods T and U by mechanism
now to be described. At the division V¹ of each piece or section V a slot is made

page_text: to correspond to the shape of the screw which it holds in position when screwed by
contact of the two surfaces. Each such piece is provided with its respective half
mould which uniting conform to the proper shape of the screw.
When the
screw W is brought up to its corresponding screwing bit ✗ the two sections are
opened by the lateral opening out of the longitudinal rods T and U by means of
the taper or wedge-shaped end of a tongue or sword Y (which depends from the
overhanging framework in a line with the screw drivers or bits at either end of the
machine) being caused to pass between the two sections. When the platform N
is lowered the rods T and U being removed from the tongue Y, the said
expanded sections return to their normal position by means of the spiral spring
and stud Z.
By virtue of the adjusting screws Z' Figure 1 the position of both boring tools
and screwing bits may be altered and a given number may be thrown out of gear
with their corresponding bevil wheels and if need be different size boring and
screwing bits may be employed.
An adjustable arrangement for clamping the articles or box under treatment is
illustrated in Figures 1 and 2. N¹ is a hinged or pivoted lever carrying an upright
batten or clamping board O¹ which can be moved freely along the said lever N¹.
The said lever N is pivotally connected to a slotted lever N2 adjustably carried in
a moveable bracket N³ clamped to the framework of the machine. The said
lever N can be locked or clamped by means of the hooked end of a lever P¹.
Another batten or clamping board Q is placed at right angles to the clamping
board O by the lever N4 also carried by the bracket N³ aforesaid. The relative
positions of these two boards O' and Q can be adjusted so as to receive various
sized articles approximating to a right angle figure or figures.
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 :-
1. The general arrangement, combination and operation of the parts whereby a
multiple spindle boring machine is made not only to bore or drill but to screw the
nails into the boxes or other article being operated upon, substantially as described
and shown on the accompanying sheets of drawings.
2. In multiple spindle boring machines, the arrangement for bringing the box or
other article being operated upon up to the drills or boring spindles, substantially
as described and shown on the accompanying drawings.
3. In such machines, the arrangement for feeding the screws to their respective
holes, substantially as described and illustrated on the accompanying sheet of
drawings.
BOTTOMLEY & LIDDLE,
154 St. Vincent Street, Glasgow, Applicant's Patent Agents.