IMPROVEMENTS IN COMBINATION MORTISING AND BORING MACHINES
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
THOMAS LEES and RALPH LEES Engineers, Hollinwood near Manchester, do
hereby declare the nature of our invention for IMPROVEMENTS IN COMBINATION
MORTISING AND BORING MACHINES to be as follows, and to be worked by Hand or
other motive power, in which Machines the Mortise is made by a hollow chisel
square or rectangular, inside which a specially constructed boring auger revolves,
slightly enlarged by a shoulder at the boring end to give clearance to the remaining
part of the anger. The shaft carrying both the hollow chisel and the revolving
auger is made to traverse either horizontally or vertically any distance required by
the depth of the mortise to be made. The traverse is effected by means of a rack A
and pinion B working into it, and is put in motion by a foot lever D which lifts a
bracket working in a slide and thus carrys a worm into gear with a wheel on the
same shaft as the pinion B. As the chisel and auger traverse to mortise, a compound
spring F is compressed, and detached when the depth of the Mortise has been
attained, and thus withdraws the chisel and auger froin the mortise to their former
position. The revolving motion of the auger being effected by means of a pulley
on the shaft E.

page_text: COMPLETE SPECIFICATION.
THOMAS LEES and RALPH LEES, Engineers, Park Foundry, Hollinwood, near
Manchester. We THOMAS LEES and RALPH LEES do hereby declare the nature of our
invention for IMPROVEMENTS IN COMBINATION MORTISING AND BORING MACHINES
and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :—
This machine is constructed to be driven by steam, gas, Electricity Hand, or other
motive power, and our invention consists in the combination and arrangement of
the mechanism whereby the mortise is made by a hollow chisel square or recti-
angular, inside which a specially constructed Boring auger revolves, slightly
enlarged by a shoulder at the boring end, to give clearance to the remaining part
of the auger. The shaft carrying both the hollow Chisel and the revolving auger is
made to traverse either horizontally or vertically any distance required by the
depth of the mortise to be made. Referring to the drawings accompanying our
provisional specification the traverse is effected by means of a rack A, and pinion B
working into it, and is put in motion by a foot lever D, which lifts a bracket
working in a slide and thus carries a worm C into gear with a wheel on the same
shaft as the pinion B.-as the chisel and auger traverse to mortise, a compound
spring F is compressed by the action of the traverse, and detached by liberating the
foot lever D. when the depth of the mortise has been attained, and thus withdraws
the Chisel and auger from the mortise to their former position. The revolving
motion of the auger being effected by means of a pulley on the shaft E.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is
Improvements in the combination of parts viz in the application for feed and
withdrawal of chisel and special construction of auger by shouldering it to effect
clearance, together with novelty of arrangement of parts as detailed in drawings
hereto annexed.