Improvements in Key-seat Slotting Machines.
Year: 1895

page_text: Date of Application, 19th Jan., 1895
Complete Specification Left, 17th Sept., 1895-Accepted, 9th Nov., 1895
Improvements in Key-seat Slotting Machines.
1, HEINRICH MEYER, of the Firm of H. Meyer & Coy., Fürstenwall 161,
Düsseldorf, in the Empire of Germany, do hereby declare the nature of this
invention to be as follows:-
.
The object of this invention is to provide a key-seat slotting machine which has
a self acting vertical motion of the work table to a predetermined height by means
of a horizontal support supplementary to the ordinary machine.
The main frame and bed of the machine are formed of one piece and the inclined
work table has a vertical movement in respect to the main frame. The tool holder
is reciprocated by means of a connecting rod one end of which is connected to the
tool holder and the other end to a crank on a shaft journalled on the machine
frame. On this shaft is keyed a spur wheel gearing with a like wheel on a second
shaft said shaft having keyed on it a crank handle by which it is turned to actuate
the machine.
On the middle of the machine bed a lever is pivoted one end of which engages
with a thumb or projection on the work table, the other end being acted on to raise
the work table by a twisted spiral thumb or eccentric secured ou a stud on the
machine frame. In conjunction with this eccentric is a ratchet wheel which is
acted on by a pawl secured on a lever pivoted on the stud said lever being actuated
from a second crank on the crank shaft. As the ratchet wheel is turned the
eccentric is brought into position to depress one end of the lever pivoted on the
machine bed and consequently raise the work table, a second pawl being provided
to prevent the ratchet wheel from turning back.
When the groove has attained the required depth the pawls are loosened and the
work table and piece of work siuk to their original positions.
The work may be traversed at right angles to the tool by means of a screw when
the breadth of the slot to be cut necessitates this.
Dated this 18th day of January 1895.
1, HEINRICH MEYER, of the Firm of H. Meyer & Coy., Fürstenwall 161,
Düsseldorf, in the Empire of Germany, Manufacturer, 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:-
The object of this invention is to provide a key-seat slotting machine which has
a self acting vertical motion of the work table, to a predetermined height to form
the key seat, by means of the addition of a horizontal support supplementary to the
ordinary machine.

page_text: The invention is illustrated by the accompanying drawings. Figure 1 is a side
elevation, Figure 2 a vertical cross section, and Figure 3 is a plan of the machine
constructed in accordance with the invention.
The main frame G and the bed B¹ of the machine are constructed in one piece
and the work table P has a vertical motion with respect to the main frame G.
This motion becomes vertical because of the action of guide pieces K secured
by bolts on lugs P₁ acting on a guide on the machine frame. Two adjustable
screws on the flap L are provided for inclining the work table P which turns on
its bolts.
The tool holder S and with it the work tool M is reciprocated by means of a
rod Zone end of which is connected to the tool holder and the other end to a
crank on a shaft S³ journaled on the machine frame. On the shaft S³ a spur
wheel R2 is keyed which gears with a like wheel R¹ on a shaft S, said shaft S
having secured on it a crank handle B by which it is turned to actuate the machine.
A lever H is pivoted on the middle of the machine bed, which has one of its ends
engaging with a thumb or projection P2 on the work table its opposite end being.
acted on to raise the work table by the action of a twisted spiral thumb or
eccentric D secured on a stud R.
In conjunction with this eccentric D is a ratchet wheel R which is acted on by a
pawl K¹ secured on a lever H¹ pivoted on the stud R said lever being actuated
from a second crank Z' on the crank shaft S³. As the ratchet wheel R is turned
the eccentric D is brought into position to depress one end of the lever H pivoted
on the machine bed B' and consequently raise the work table P, a second pawl K²
being provided to prevent the ratchet wheel R from turning back.
When the groove has attained the required depth the pawls are loosened and the
work table and piece of work sink to their original positions.
Figure 1 shews the machine with a work piece A being acted on by the tool M.
Figure 3 shews the adaptation of a horizontal support A2 applicable to this or
similar machines.
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 :-
A key-seat slotting or similar machine having a vertically sliding table P
supported at right angles to the machine bed B₁ and raised by means of a beam
lever H which is acted on by a spiral thumb or eccentric D actuated by a ratchet R
and pawl K until the key seat has attained the desired depth whereupon the
eccentric D passes out of action with the lever H and the table P sinks to its
original position.
Dated this 16th day of September 1895.
WALLACE FAIRWEATHER,
Chartered Patent Agent,
62 Saint Vincent Street, Glasgow, Agent for the Applicant.