Improvements in Mechanical Hammers.
Year: 1892

page_text: Date of Application, 3rd Nov., 1892
Complete Specification Left, 26th July, 1893-Accepted, 9th Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in Mechanical Hammers.
I, ERNST HAMMESFAHR, of No. 7 Foche, Solingen, Prussia, in the German
Empire, Manufacturer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to that construction of mechanical hammers wherein two
pairs of opposite sliding hammer blocks are made to operate at right angles to each
other.
According to the present invention the two sets of such opposite hammer blocks
are connected together by pivotted links in such manner that each pair is thereby
alternately brought against the object to be operated upon, the said two pair of
hammers being either made to operate in one and the same plane, or in two different
planes.
The accompanying drawing shews the arrangements which I employ for this
purpose.
The four rigid or spring links n Fig. 1 are connected together in the form of a
parallelogram, the pivot pins z of which are fixed to the four hammer blocks a,
which slide in guides and to which are pivotted at tt two connecting rods 9 g, the
other ends of which are connected to cranks, eccentrics, or the like, by which a to
and fro motion is imparted thereto.
The connecting rods 9 are constructed of two separate parts, which are capable
of adjustment relatively to each other, for which purpose they are connected
together by a spring connection, which may be variously arranged.
In the arrangement shewn, the one part of the rod has a head q' situated within
a box 6 fixed to or formed on the other part, in which box are two springs ff one
on each side of the head q', against which they bear with the one end while the
other ends bear respectively against the bottom of the box and the cover screwed
thereon.
Thus the springs allow of a certain motion of the head q¹ in the box so as to
extend or contract the rod, while they tend always to bring the two parts back to
the normal combined length. It will be seen that by the inward motion of each rod
the hammer block connected directly thereto, as also the opposite one, will be brought
forcibly together so as to operate simultaneously upon the object placed between
them, while at the same time the other pair of hammer-blocks will be moved away
from such object. Owing to the connection' of all four hammer blocks by the links n,
In the
it will be seen that they might all be actuated by means of a single rod q.
arrangement shewn at Fig. 1 it is assumed that all four hammer blocks operate in
one and the same plane, so as to act upon the four sides of one and the same part
of the object.
The pairs of hammer blocks a a a¹ a¹ can however be made to operate in different
planes, as indicated at Fig. 2, so that the object is acted upon at two different parts,
such as at a and at y. By this means it is possible to act on a part of the object
first by the one pair of hammers, and then, after shifting the object forward, by the
other pair, which may be advantageous in many cases.
Dated this 3rd day of November 1892.
ABEL & IMKAY,
Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Mechanical Hammers,
I, ERNST HAMMESFAHR, of No. 7 Foche, Solingen, Prussia, in the German
Empire, 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 :-
My invention relates to that construction of mechanical hammers wherein two
pairs of opposite sliding hammer blocks are made to operate at right angles to each
other.
According to the present invention the two sets of such opposite hammer blocks
are connected together by pivotted links in such manner that each pair is thereby
alternately brought against the object to be operated upon, the said two pair of
hammers being either made to operate in one and the same plane, or in two different
planes:
The drawing accompanying my Provisional Specification shews the arrange-
ments which I employ for this purpose.
The four rigid or spring links n Fig. 1 are connected together in the form of a
parallelogram, the pivot pins z of which are fixed to the four hammer blocks a,
which slide in guides and to which are pivotted at tt two connecting rods gg the
other ends of which are connected to cranks, eccentrics, or the like, by which a to
and fro motion is imparted thereto.
The connecting rods a are constructed of two separate parts, which are capable
of adjustment relatively to each other, for which purpose they are connected
together by a spring connection, which may be variously arranged.
In the arrangement shewn, the one part of the rod has a head q' situated within
a box b fixed to or formed on the other part, in which box are two springs ff, one
on each side of the head q' against which they bear with the one end while the
other ends bear respectively against the bottom of the box and the cover screwed
thereon.
Thus the springs allow of a certain motion of the head q¹ in the box so as to
extend or contract the rod, while they tend always to bring the two parts back to
the normal combined length. It will be seen that by the inward motion of each rod
the hammer block connected directly thereto, as also the opposite one, will be
brought forcibly together so as to operate simultaneously upon the object placed
between them, while at the same time the other pair of hammer-blocks will be
moved away from such object. Owing to the connection of all four hammer blocks
by the links n..
it will be seen that they might all be actuated by means of a single
rod g. In the arrangement shewn at Fig. 1 it is assumed that all four hammer
blocks operate in one and the same plane, so as to act upon the four sides of one
and the same part of the object.
The pairs of hammer blocks a a a¹ a¹ can however be made to operate in different
planes, as indicated at Fig. 2, so that the object is acted upon at two different
parts, such as at x and at y. By this means it is possible to act on a part of the
object first by the one pair of hammers, and then, after shifting the object forward,
by the other pair, which may be advantageous in many cases.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination of two pairs of hammer blocks arranged at right angles to
each other and connected to an articulated parallelogram whereby each pair of
hammer blocks is alternately made to approach and recede from each other, the
requisite reciprocating motion being imparted to the one or the other pair or
alternately to each pair substantially as described.

page_text: 2. In hammer blocks operating in pairs as set forth in the preceding claim,
arranging the one pair to operate in a different plane from the other pair, so as to
act upon different parts of the object, substantially as described.
Dated this 26th day of July 1893.
ABEL & IMRAY,
Agents for the Applicant.