Improved Construction of Sensitive Drilling Machine.
Year: 1899

page_text: Date of Application, 20th Mar, 4000
Complete Specification Left, 28th Dec., 1899-Accepted, 3rd Mar., 1900
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Complete Specification Left, 28th Dec., 1899--Accepted, 3rd Mar., 1900
Improved Construction of Sensitive Drilling Machine.
I, ALFRED GEORGE MELIUISHI, Manager to Messrs. Wm. Cook & Co. Engineers
Limited, of Gothic Works, Salamanca Street, Vauxhall Walk, London,
Machinists, Lathe and Tool Manufacturers, do hereby declare the nature of this
invention to be as follows: —
The object of this invention, is to construct a drilling machine which shall
be easy of manipulation and adjustment and of small cost in manufacture the
power being applied by treadle or otherwise.
For the purpose of my invention I construct a hollow column or base carrying
at its lower part the usual treadle appliances and driving wheel, and at its upper
part extensions for carrying the drill spindle. In the hollow column or base, I
arrange a rod in connection with which at the upper part is a pivotted hand
lever.
The work table is provided with a sleeve encircling a column, which sleeve is
made in halves, one half having connected to it a projecting arm riding in a
slot of the column. This projecting arm has an eye which encircles' the rod
inside the column, and a set screw passing through the segment and extension
will pinch upon the rod and hold the table firmly to the rod at the position
required, so that by action on the hand lever, the rod and with it the table can
be lifted to bring the work on the table up to the drill for operation.
The drill spindle carries the variable speed-pulley, and the column carries two
adjustable guide pulleys, so arranged that different speeds can be given to the
drill by simply adjusting the column pulleys and shifting the belt from one
surface of the variable speed pulley to the other, the motion being obtained
from a one sized pulley on the driving shaft.
When it is desired to employ power other than treadle, I may dispense with
the hand lever and operate the table by a treadle, or use both in combination.
Improved Construction of Sensitive Drilling Machine.
I, ALFRED GEORGE MELHUISHI, Manager to Messrs. Wm. Cook & Co. Engineers
Limited, of Gothic Works, Salamanca Street, Vauxhall Walk, London,
6 Machinists, Lathe and Tool Manufacturers, do hereby declare the nature of this
[Price 8d1

page_text: invention and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement:-
The object of this invention, is to construct a drilling machine which shall
be easy of manipulation and adjustment and of small cost in manufacture, the
power being applied by treadle or otherwise.
The invention is shown on the annexed sheet of drawings. Figure 1 part sec-
tional elevation from one side of the machine. Figure 2 similar elevation from
the reverse side. Figure 3 sectional plan through line aa of the column and
table support.
For the purpose of my invention, I construct a hollow column A or base
carrying at its lower part the usual treadle appliances B and driving wheel C
and at its upper part extensions D, E, for carrying the drill spindle X. In the
hollow column A, I arrange a rod G in connection with which at the upper part
may be pivotted a hand lever H.
The workplate I is provided with a sleeve J encircling the column, which
sleeve is made in halves, one half having connected to it a projecting arm K
riding in a slot L of the column A. This projecting arm K has an eye which
encircles the rod G inside the column A and a set screw M. passing through the
segment and arm will pinch upon the rod G and hold the table I firmly to said
rod G at the position required, so that by action on the hand lever H, the rod
and with it the table I can he lifted to bring the work on the table I up to the
drill in the holder N for operation.
The drill spindle carries the variable speed pulley P, and the column A carries
two adjustable guide pulleys Q, Q, so arranged that different speeds can be given
to the drill by simply altering the position and adjusting the column pulleys Q. Q,
and shifting the belt R from one surface of the variable speed pulley I to the
other, the motion being obtained from a one sized pulley C on the driving
shaft S.
When it is desired to employ power other than manual, I may dispense with
the hand lever and operate the table I by a treadle T, or use either of those
appliances if both be fitted, as at Figure 2.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
1. In drilling machines of the kind represented, the slot L in column A,
sliding arm K of work table I affixable to and adjustable on rod G operable by
hand lever H, or treadle T as and for the purposes described.
2. In drilling machines of the kind represented, the adjustable pulleys Q. Q.
of the column A and their connection through the strap R with variable pul-
leys P of the drill spindle of a one wheel driver C, substantially as shown for
the purposes specified.
3. In drilling machines, of the kind represented in which the work table I is
adjustable on rod G from within a slotted column A, the employment of hand
lever H alone or in combination with pedal T for the purpose explained.
4. In drilling machines of the kind represented, the combination of work
table I. sleeve, pinch screw M, arranged in relation to slotted column A, and
adjustable on rod G, as and for the purposes described.
The 28th day of December 1000