Transportable photographic enlarger

Claim 2

A photographic enlarger adapted for transportable use, comprising: a housing constructed for external support; means carried by the housing for illuminating a photographic film image; a standard carrying an enlarging lens system axially movable relative to the housing for varying the degree the enlargement of the film image emanating from the enlarging lens system, the standard including an axially extending upper portion movable with the standard and having a serrated outer surface; and retaining means including a complementary, serrated locking member associated with the housing and engageable with the outer surface of the axially extending portion to secure firmly the standard in a selected position relative to the housing.

Claim 3

The photographic enlarger of claim 1, wherein the axially extending portion is enclosed by the housing.

Claim 4

The photographic enlarger of claim 1, wherein the standard includes a plurality of axially extending rods slidably supported by the housing, the enlarger also comprising a bellows assembly forming an expansible photographic chamber intermediate the condensing lens and the enlarging lens systems and located in a space defined between the rods.

Claim 5

A photographic enlarger adapted for transportable use, comprising: a housing constructed for external support; means carried by the housing for illuminating the photographic film image; a standard carrying an enlarging lens system axially movable relative to the housing for varying the degree of the enlargement of the film image emanating from the enlarging lens system; retaining means associated with the housing and selectively engageable with the standard to secure the standard in an axial position producing the desired degree of enlargement; a carrying case including an openable side for gaining access to the enlarger; and at least one mounting arm pivotally supporting the enlarger for alignment in the vertical position and pivotally mounted to the case, the arm being movable between the first position in which the enlarger is located wholly within the carrying case and a second position wherein the enlarger is vertically supported free of any surfaces of the carrying case.

Claim 6

A photographic enlarger adapted for transportable use, comprising: a housing constructed for external support; means carried by the housing for illuminating the photographic film image; a standard carrying an enlarging lens system axially movable relative to the housing for varying the degree of the enlargement of the film image emanating from the enlarging lens system; retaining means associated with the housing and selectively engageable with the standard to secure the standard in an axial position producing the desired degree of enlargement; a carrying case including an openable side for gaining access to the enlarger; and at least one mounting arm pivotally supporting the enlarger for alignment in the vertical position and pivotally mounted to the case, the arm being movable between the first position in which the enlarger is located wholly within the carrying case and a second position wherein the enlarger is vertically supported free of any surfaces of the carrying case.

Claim 7

The photographic enlarger of claim 4, wherein the housing is located at least partially outside the carrying case in the vertical position, the enlarger further comprising: an easel slidably supported at the bottom of the carrying case and movable from a position within the carrying case to a position at least partially outside the carrying case for support-ing photosensitive material below and in optical alignment with the enlarging lens system.

Claim 8

The photographic enlarger of claim 4, wherein the housing, the mounting arm and at least portions of the carrying case are constructed from a material having high heat conductivity to conduct heat from the enlarger to the environment.

Claim 9

The photographic enlarger of claim 4, comprising a mounting arm pivotally supporting the enlarger housing on each of a pair oF opposite sides thereof and extending parallel to one another, each such mounting arm being resiliently biased away from the housing and deflectable toward the housing, a support extending inwardly of the carrying case from each of opposite vertical sides of the carrying case adjacent the opening, the mounting arms being engageable with the support members when in the normally biased position away from the housing, and being disengageable from the support members when moved toward the housing.