Kershaw Patent - Antique and Vintage Cameras

Kershaw Patent

1885

Early Model

Image of Kershaw Patent Early Model

Shutter Type:
Roller-blind, single blind. Spring powered, tension varies exposure.

Attributes:
The blind is marked D and U for not set and set respectively.

This is an early roller-blind shutter, the blind is wound to the top roller in the shutter by a cogwheel, when released the blind is pulled by a spring in the lower roller, the spring tension can be varied by a ratchet and pawl mechanism. The basic design was copied by many manufacturers especially Thornton-Pickard.

References & Notes:
BP 5014/1885.

N&G Roller-Blind

1892

Early Model

Newman & Guardia

London

England

Image of N&G Roller-Blind Early Model

Shutter Type:
Roller-blind, single blind. Spring powered, pneumatic regulation.

Attributes:
Speeds 1/50 - 1, T (by short pressure on release). Front of lens fitting.

Serial Number:
125 .

This is a roller-blind shutter with the unusual feature of being regulated by a pneumatic delay. The upper spindle has attached to it a pinion, this works within a rack the bottom of which is connected to the piston of the delay cylinder.

The early models showed the speeds on a quadrant-shaped scale, later an arm along the lower edge of the shutter was used.

The shutter is robust and works well. It was not given much emphasis in N&G advertisements and did not sell in large numbers.

References & Notes:
BP 5742/1892. BJA 1893, p. 418. BJA 1899, p. 138.

Kershaw Patent

1891

Stereo Model

Image of Kershaw Patent Stereo Model

Shutter Type:
Roller-blind, single blind. Spring powered, tension varies exposure.

Attributes:
Speeds 5 - 20. Variable lens separation.

Identification:
French inscriptions.

This patent included the use of a worm wheel to display the speeds. The mechanism is an improvement on Kershaw's earlier roller-blind patents.

References & Notes:
BP 10798/1891.


Company Details:

Newman & Guardia

Guerry Flap Shutter

Phoenix

Rotary

Unnamed Studio Shutter

Idento Sector

N&G Sector

Lancaster See-Saw

Sands' Patent

Simplex

Nydia

Newman's Patent

Sarjeant

The Adjustable

Single blade Return

Linhof

Le Perpetuel

Ilex

Derval, Vario, Nettar

Victor, Unicum, Argos
Automat, I T B

Regular, Junior
Trichro, Eastman Triple Action

Compound

Compur

Koilos

Ibso

Automat, Ilex, Ilex Acme
Ball Bearing, Kodamatic

Luc, Agilux
T-P Gun Camera

B&L Iris, Goerz Sector, Volute
Pocket Automatic

T-P T&I

T-P Time, Studio, Snap-Shot
T-P Stereo, Extra Rapid

Kershaw Patent

N&G Roller-Blind

Roller-Blind

T-P Focal-Plane

N&G Focal-Plane

Minex

Eye-lid