US539212A

US539212A - Apparatus for reproducing phonograms

Info

Publication number: US539212A
Authority: US
Publication date: 1895-05-14
Anticipated expiration: 1912-05-14

Description

: (No Model.) E. H. AMET.

V APPARATUS FOR REPROD UGING PHONOG-RAMS. I No. 539,212. I Patented May 14, 1895.

MATH/E5355. J/y vE/v TOR.

' LEW/amt? 1 7M57- t I f HM jrro/Pmsm.

. UNITED STATES PATENT OFFICE.

EDWARD H. AMEV'I, on WAUKEGAN, ASSIGNOR 'ro CHARLES DICKINSON, or

CHICAGO,

ILLINOIS.

APPARATUS FOR REPRODUCING PHONOGRAMS.

SPECIFIGATION forming part of Letters Patent Lia/539,212, dated May 14, 1895.

Application filed January 9, 1895.

To all whom it may concern:

Be it known that I, EDWARD H. AMET, a citizen of the United States, residing in Waukegan, in the county of Lake and State of Illinois, haveinvented a new and useful Improvement in Apparatus for Reproducing Phonograms, of which the following is a specification.

My invention relates to the copying or reproductionof phonograms or sound writings.

My invention consists in the novel construction of parts and devices and novel combinations of parts and devices herein shown and described and specified in the claims.

In the accompanying drawings, forming a part of this specification, Figure l is a plan view of an apparatus suitable for use in practicing my invention and embodying the machine or apparatus features of my invention. Fig. 2 is an enlarged vertical cross-section taken on line 2 2 of Fig. 1, and Fig.3 shows a modification.

In the drawings A represents the frame and B and B the revolving shafts or holders for holding and revolving synchronously the original phonogram cylinder 0 and the similar cylinder 0 upon which the copy is to be made.

D isthe traveling head, frame or slide, upon which the reproducing or following stylus F and the recording or engraving stylus H are mounted. The reproducing stylus F is, or should be, of the usual round pointed jewelform, and it is secured to a two-way, thin, light flexible spring f, preferably of steel. This spring f is made two-way for the purpose of giving the stylus 'F the necessary freedom of movement laterally to follow the lines of writing on the cylinder 0 and also the necessary freedom of movement up and down to follow the elevations and depressions of the sound Writing on said cylinder. The spring f can be most conveniently made flexible in two directions by simply giving it a twist f By making the spring arm f thus capable of yielding in two directions I obviate the necessity and expense of pivotally mounting said arm upon its support (1.

T 0 give opportunity for easily adjusting the direction and position of the reproducing stylus F in relation to the cylinder O I prefits supporting arm.

erably provide the spring arm f with an ex- Serla1No.'534,320. (No model.)

cheaper but more convenient than ad justing screws or other means.

The recording or engraving stylus H 1s preferably of the usual sharp pointed jewel construction familiar to those skilled in the art, and it is carried by a lever h which is pivoted at h to aweight or weighted arm 7L whichitself is pivoted at k to the head D; At the free end of the weighted arm h is an adjustable stop it to limit the movement of the weighted arm. The end of the lever h opposite to the stylus H is'connected by a flexible link it to the stylus F 3 this being done preferably through an intermediate lever h pivoted at k to an arm 01 on the head D, and which lever h is connected by a link It with the stylus F, or As shown in Fig. 2 the intermediate lever also serves to multiply the movement, thus tending to make the copy of greater clearnessand volume than the original. In the modification shown at Fig. 3 the intermediate lever '71. is omitted and the link connection made direct between the arm of the reproducing stylus and the lever or arm carrying therecording stylus.

The link connection between the reproducing stylus and the recording stylus, whether the same be made in one piece, as indicated in Fig. 3, or in two pieces h h as indicated in Fig. 2, is preferably made, I find, of lead wire, or other substance possessing little elasticity, though it may be made of any suitable material. Y

The two shafts B and B are revolved synchronously by a belt I) on the pulleys b b The traveling head, slide or frameD is fed or reciprocated by a feeding screw 19 on the shaft B engaging a screw threaded arm or nut d secured to the head D.

It will be observed that the end of the recording stylus lever 71. to which the link It is connected, moves directly in unison with the ICO Sam

tween the reproducing stylus F and the recording stylus His direct or mechanical, without the intervention of vibrating diaphragms or sound waves in the air, the copy 0 is necessarily an exact and perfect copy of the original O.

The spring arm f serves to hold the reproducing stylus F properly in contact/with the original phonogram cylinder 0, and the weighted arm 7L2 serves to keep therecording stylus H properly in contact with its cylinder and the link connection between the two styli taut. or under tension, so that the movement of the stylus F is properly communicated to the stylus 1-1.

I claim 1. The combination with revolving shafts B B forholding and revolving the cylinders O G, of a traveling head D, reproducing stylus F secured to a spring arm, recording stylus I-I secured at one end of a lever it, said lever 72, a weighted arm kg to which said lever h is pivoted, and a link connection between the opposite end of said lever h and said reproducing stylus, said reproducing stylus carrying spring arm f, being a spring flexible in two directions, substantially asspecified.

2. The combination with revolving shafts B B for holding and revolving the cylinders G C, of a traveling head D, reproducing stylus F secured to a spring arm, recording stylus H secured at one end of a lever h, said lever 7t, a weighted arm ]L2 to which said. lever h is pivoted, and a link connection: between the opposite end of said lever 7L and said reproducing stylus, said reproducing stylus carrying spring arm fhaving an extension f of flexible, non-resilient material, substantially as specified.

3. The combination with' revolving shafts B B for holding and revolving the cylinders O C, of a traveling head D, reproducing stylus F secured to a spring arm, recording stylus H secured at one end of a lever It, said lever h, a weighted arm it to which said lever h is pivoted, and a link connection between the opposite end of said lever 71, and said reproducing stylus, and an intermediate lever h inserted in the connection between said lever h and said stylus F, substantially as specified.

4. Ina phonogram reproducing or copying mechanism, thecombination with a reproducing stylus mounted on a spring arm, of a re cording stylus mounted on a weighted arm, and a connection between said spring arm and said weighted arm, saidconnectiou being provided with a lever for multiplying the move ment, substantially as specified.

5. In a phonogram reproducing or copying mechanism, the combination with a reproducing stylus mounted on a two-way spring arm, of a recording stylus mounted on a weighted lever and a connection between said lever-an d said spring arm, substantially as specified.

6. In a phonogram reproducing or copying mechanism, the combination with a reproducingstylus mounted on a spring arm, of a recording stylus mounted on a weighted arm,- and a lead wire connection between said spring arm and said weighted arm, substantially as specified.

EDWARD I-I. AHET.

VVituesses:

H. M. MUNDAY, L. E. CURTIS.